diff --git a/.github/sync.yml b/.github/sync.yml
index f543b2d39..859096c6f 100644
--- a/.github/sync.yml
+++ b/.github/sync.yml
@@ -6,12 +6,6 @@ OpenIMSDK/.github:
   - source: scripts/LICENSE/
     dest: scripts/LICENSE/
     replace: false
-  - source: .github/
-    dest: .github/
-    replace: false
-    exclude: |
-      workflows/
-      sync.yml
 
 OpenIMSDK/community:
   - source: LICENSE
@@ -21,14 +15,6 @@ OpenIMSDK/community:
     replace: false
   - source: .github/workflows/
     dest: .github/workflows/
-    exclude:
-      - e2e-test.yml
-      - sync.yml
-  - source: .github/
-    dest: .github/
-    replace: false
-    exclude: |
-      sync.yml
 
 OpenIMSDK/openim-sdk-core:
   - source: LICENSE
@@ -53,6 +39,18 @@ OpenIMSDK/OpenIM-Docs:
     dest: scripts/githooks/
     replace: true
 
+OpenIMSDK/OpenKF:
+  - source: LICENSE
+    dest: LICENSE
+  - source: scripts/LICENSE/
+    dest: scripts/LICENSE/
+    replace: false
+  - source: .github/workflows/issue-robot.yml
+    dest: .github/workflows/issue-robot.yml
+    replace: false
+  - source: .github/workflows/stale.yml
+    dest: .github/workflows/stale.yml
+    replace: false
 
 group:
   # first group：common to all warehouses
diff --git a/.github/workflows/e2e-test.yml b/.github/workflows/e2e-test.yml
index 4e768b56d..e69de29bb 100644
--- a/.github/workflows/e2e-test.yml
+++ b/.github/workflows/e2e-test.yml
@@ -1 +0,0 @@
-# 
\ No newline at end of file
diff --git a/.github/workflows/link-pr.yml b/.github/workflows/link-pr.yml
index 844dd5fde..a3e0ee2de 100644
--- a/.github/workflows/link-pr.yml
+++ b/.github/workflows/link-pr.yml
@@ -1,47 +1,39 @@
-# name: Github Rebot for Link check error
+name: Github Rebot for Link check error
 
-# on:
-#   pull_request:
-#     branches: [ main ]
-#     paths:
-#       - '**.md'
-#       - 'docs/**'
-#       - '.lycheeignore'
-#   push:
-#     branches: [ main ]
-  
-#   schedule: 
-#     - cron:  '0 11 * * *'
+# Every Monday at 12:30 p.m
+on:
+  schedule:
+    - cron: '30 12 * * 1'
 
-# jobs:
-#   linkChecker:
-#     runs-on: ubuntu-latest
-#     steps:
-#       - uses: actions/checkout@v3
+jobs:
+  linkChecker:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
 
-#       - name: Link Checker
-#         id: lychee
-#         uses: lycheeverse/lychee-action@v1.7.0
-#         with:
-#             # For parameter description, see https://github.com/lycheeverse/lychee#commandline-parameters
-#             # Actions Link address -> https://github.com/lycheeverse/lychee-action
-#             # -E, --exclude-all-private    Exclude all private IPs from checking.
-#             # -i, --insecure               Proceed for server connections considered insecure (invalid TLS)
-#             # -n, --no-progress            Do not show progress bar.
-#             # -t, --timeout <timeout>      Website timeout in seconds from connect to response finished [default:20]
-#             # --max-concurrency <max-concurrency>    Maximum number of concurrent network requests [default: 128]
-#             # -a --accept <accept>                      Comma-separated list of accepted status codes for valid links
-#             # docs/.vitepress/dist the site directory to check
-#             # ./*.md all markdown files in the root directory
-#           args: --verbose  -E -i --no-progress --exclude-path './CHANGELOG' './**/*.md'
-#         env:
-#           GITHUB_TOKEN: ${{secrets.GH_PAT}}
+      - name: Link Checker
+        id: lychee
+        uses: lycheeverse/lychee-action@v1.7.0
+        with:
+            # For parameter description, see https://github.com/lycheeverse/lychee#commandline-parameters
+            # Actions Link address -> https://github.com/lycheeverse/lychee-action
+            # -E, --exclude-all-private    Exclude all private IPs from checking.
+            # -i, --insecure               Proceed for server connections considered insecure (invalid TLS)
+            # -n, --no-progress            Do not show progress bar.
+            # -t, --timeout <timeout>      Website timeout in seconds from connect to response finished [default:20]
+            # --max-concurrency <max-concurrency>    Maximum number of concurrent network requests [default: 128]
+            # -a --accept <accept>                      Comma-separated list of accepted status codes for valid links
+            # docs/.vitepress/dist the site directory to check
+            # ./*.md all markdown files in the root directory
+          args: --verbose  -E -i --no-progress --exclude-path './CHANGELOG' './**/*.md'
+        env:
+          GITHUB_TOKEN: ${{secrets.GH_PAT}}
 
-#       - name: Create Issue From File
-#         if: env.lychee_exit_code != 0
-#         uses: peter-evans/create-issue-from-file@v4
-#         with:
-#           title: Bug reports for links in OpenIM docs
-#           content-filepath: ./lychee/out.md
-#           labels: kind/documentation, triage/unresolved, report
-#           token: ${{ secrets.BOT_GITHUB_TOKEN }}
+      - name: Create Issue From File
+        if: env.lychee_exit_code != 0
+        uses: peter-evans/create-issue-from-file@v4
+        with:
+          title: Bug reports for links in OpenIM docs
+          content-filepath: ./lychee/out.md
+          labels: kind/documentation, triage/unresolved, report
+          token: ${{ secrets.BOT_GITHUB_TOKEN }}
diff --git a/.github/workflows/opencommit.yml b/.github/workflows/opencommit.yml
index d3d52508d..80fc9e302 100644
--- a/.github/workflows/opencommit.yml
+++ b/.github/workflows/opencommit.yml
@@ -2,9 +2,8 @@ name: 'OpenCommit Action'
 
 on:
   push:
-    # this list of branches is often enough,
-    # but you may still ignore other public branches
-    branches-ignore: [main master dev development release]
+    branches:
+      - main
 
 jobs:
   opencommit:
diff --git a/Makefile b/Makefile
index 5d7ac6bd3..2dd10fdbd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,3 @@
-
-# TODO: 参考我对 horizon 的 Makefile 设计： 
-# TODO: https://github.com/horizoncd/horizon/pull/141
-# TODO: 设计稿：代写~
-# TODO：请在 issue 关闭之前不要使用 Makefile 中的 targe(尤其是重构前）
-
 # ==============================================================================
 # define the default goal
 #
diff --git a/internal/rpc/user/statistics.go b/internal/rpc/user/statistics.go
index 036b09687..742d79f3a 100644
--- a/internal/rpc/user/statistics.go
+++ b/internal/rpc/user/statistics.go
@@ -11,13 +11,18 @@ func (s *userServer) UserRegisterCount(ctx context.Context, req *pbuser.UserRegi
 	if req.Start > req.End {
 		return nil, errs.ErrArgs.Wrap("start > end")
 	}
-	total, err := s.CountTotal(ctx)
+	total, err := s.CountTotal(ctx, nil)
 	if err != nil {
 		return nil, err
 	}
-	count, err := s.CountRangeEverydayTotal(ctx, time.UnixMilli(req.Start), time.UnixMilli(req.End))
+	start := time.UnixMilli(req.Start)
+	before, err := s.CountTotal(ctx, &start)
 	if err != nil {
 		return nil, err
 	}
-	return &pbuser.UserRegisterCountResp{Total: total, Count: count}, nil
+	count, err := s.CountRangeEverydayTotal(ctx, start, time.UnixMilli(req.End))
+	if err != nil {
+		return nil, err
+	}
+	return &pbuser.UserRegisterCountResp{Total: total, Before: before, Count: count}, nil
 }
diff --git a/pkg/common/db/controller/user.go b/pkg/common/db/controller/user.go
index d1346d311..0ed9290f0 100644
--- a/pkg/common/db/controller/user.go
+++ b/pkg/common/db/controller/user.go
@@ -31,7 +31,7 @@ type UserDatabase interface {
 	//函数内部先查询db中是否存在，存在则什么都不做；不存在则插入
 	InitOnce(ctx context.Context, users []*relation.UserModel) (err error)
 	// 获取用户总数
-	CountTotal(ctx context.Context) (int64, error)
+	CountTotal(ctx context.Context, before *time.Time) (int64, error)
 	// 获取范围内用户增量
 	CountRangeEverydayTotal(ctx context.Context, start time.Time, end time.Time) (map[string]int64, error)
 }
@@ -134,8 +134,8 @@ func (u *userDatabase) GetAllUserID(ctx context.Context) (userIDs []string, err
 	return u.userDB.GetAllUserID(ctx)
 }
 
-func (u *userDatabase) CountTotal(ctx context.Context) (count int64, err error) {
-	return u.userDB.CountTotal(ctx)
+func (u *userDatabase) CountTotal(ctx context.Context, before *time.Time) (count int64, err error) {
+	return u.userDB.CountTotal(ctx, before)
 }
 
 func (u *userDatabase) CountRangeEverydayTotal(ctx context.Context, start time.Time, end time.Time) (map[string]int64, error) {
diff --git a/pkg/common/db/relation/user_model.go b/pkg/common/db/relation/user_model.go
index 3390f7d3b..da62ffff8 100644
--- a/pkg/common/db/relation/user_model.go
+++ b/pkg/common/db/relation/user_model.go
@@ -67,9 +67,15 @@ func (u *UserGorm) GetUserGlobalRecvMsgOpt(ctx context.Context, userID string) (
 	return opt, err
 }
 
-func (u *UserGorm) CountTotal(ctx context.Context) (count int64, err error) {
-	err = u.db(ctx).Model(&relation.UserModel{}).Count(&count).Error
-	return count, errs.Wrap(err)
+func (u *UserGorm) CountTotal(ctx context.Context, before *time.Time) (count int64, err error) {
+	db := u.db(ctx).Model(&relation.UserModel{})
+	if before != nil {
+		db = db.Where("create_time < ?", before)
+	}
+	if err := db.Count(&count).Error; err != nil {
+		return 0, err
+	}
+	return count, nil
 }
 
 func (u *UserGorm) CountRangeEverydayTotal(ctx context.Context, start time.Time, end time.Time) (map[string]int64, error) {
diff --git a/pkg/common/db/table/relation/user.go b/pkg/common/db/table/relation/user.go
index 35b52602f..86d53e279 100644
--- a/pkg/common/db/table/relation/user.go
+++ b/pkg/common/db/table/relation/user.go
@@ -52,7 +52,7 @@ type UserModelInterface interface {
 	GetAllUserID(ctx context.Context) (userIDs []string, err error)
 	GetUserGlobalRecvMsgOpt(ctx context.Context, userID string) (opt int, err error)
 	// 获取用户总数
-	CountTotal(ctx context.Context) (count int64, err error)
+	CountTotal(ctx context.Context, before *time.Time) (count int64, err error)
 	// 获取范围内用户增量
 	CountRangeEverydayTotal(ctx context.Context, start time.Time, end time.Time) (map[string]int64, error)
 }
diff --git a/pkg/proto/user/user.pb.go b/pkg/proto/user/user.pb.go
index f0db26e04..50fba3398 100644
--- a/pkg/proto/user/user.pb.go
+++ b/pkg/proto/user/user.pb.go
@@ -1509,8 +1509,9 @@ type UserRegisterCountResp struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Total int64            `protobuf:"varint,1,opt,name=total,proto3" json:"total"`
-	Count map[string]int64 `protobuf:"bytes,2,rep,name=count,proto3" json:"count" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"`
+	Total  int64            `protobuf:"varint,1,opt,name=total,proto3" json:"total"`
+	Before int64            `protobuf:"varint,2,opt,name=before,proto3" json:"before"`
+	Count  map[string]int64 `protobuf:"bytes,3,rep,name=count,proto3" json:"count" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"`
 }
 
 func (x *UserRegisterCountResp) Reset() {
@@ -1552,6 +1553,13 @@ func (x *UserRegisterCountResp) GetTotal() int64 {
 	return 0
 }
 
+func (x *UserRegisterCountResp) GetBefore() int64 {
+	if x != nil {
+		return x.Before
+	}
+	return 0
+}
+
 func (x *UserRegisterCountResp) GetCount() map[string]int64 {
 	if x != nil {
 		return x.Count
@@ -1788,80 +1796,82 @@ var file_user_user_proto_rawDesc = []byte{
 	0x73, 0x65, 0x72, 0x52, 0x65, 0x67, 0x69, 0x73, 0x74, 0x65, 0x72, 0x43, 0x6f, 0x75, 0x6e, 0x74,
 	0x52, 0x65, 0x71, 0x12, 0x14, 0x0a, 0x05, 0x73, 0x74, 0x61, 0x72, 0x74, 0x18, 0x01, 0x20, 0x01,
 	0x28, 0x03, 0x52, 0x05, 0x73, 0x74, 0x61, 0x72, 0x74, 0x12, 0x10, 0x0a, 0x03, 0x65, 0x6e, 0x64,
-	0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x52, 0x03, 0x65, 0x6e, 0x64, 0x22, 0xb2, 0x01, 0x0a, 0x15,
+	0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x52, 0x03, 0x65, 0x6e, 0x64, 0x22, 0xca, 0x01, 0x0a, 0x15,
 	0x75, 0x73, 0x65, 0x72, 0x52, 0x65, 0x67, 0x69, 0x73, 0x74, 0x65, 0x72, 0x43, 0x6f, 0x75, 0x6e,
 	0x74, 0x52, 0x65, 0x73, 0x70, 0x12, 0x14, 0x0a, 0x05, 0x74, 0x6f, 0x74, 0x61, 0x6c, 0x18, 0x01,
-	0x20, 0x01, 0x28, 0x03, 0x52, 0x05, 0x74, 0x6f, 0x74, 0x61, 0x6c, 0x12, 0x49, 0x0a, 0x05, 0x63,
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 }
 
 var (
diff --git a/pkg/proto/user/user.proto b/pkg/proto/user/user.proto
index 6cdbf53d9..117eb3a5f 100644
--- a/pkg/proto/user/user.proto
+++ b/pkg/proto/user/user.proto
@@ -141,7 +141,8 @@ message userRegisterCountReq {
 
 message userRegisterCountResp {
   int64 total = 1;
-  map<string, int64> count = 2;
+  int64 before = 2;
+  map<string, int64> count = 3;
 }
 
 service user {
diff --git a/scripts/make-rules/golang.mk b/scripts/make-rules/golang.mk
index 336fead4a..1b70f09da 100644
--- a/scripts/make-rules/golang.mk
+++ b/scripts/make-rules/golang.mk
@@ -17,7 +17,7 @@
 #
 
 GO := go
-GO_SUPPORTED_VERSIONS ?= |1.15|1.16|1.17|1.18|1.19|1.20|
+GO_SUPPORTED_VERSIONS ?= 1.18|1.19|1.20
 
 GO_LDFLAGS += -X $(VERSION_PACKAGE).gitVersion=$(GIT_TAG) \
 	-X $(VERSION_PACKAGE).gitCommit=$(GIT_COMMIT) \