diff --git a/internal/timeline/README.md b/internal/timeline/README.md
new file mode 100644
index 00000000..fd1f55fe
--- /dev/null
+++ b/internal/timeline/README.md
@@ -0,0 +1,2 @@
+### Timeline(Timeline Message Flow System
+广场时间线消息流系统模块, 目前还没实现，先占个位置～
diff --git a/internal/timeline/timeline.go b/internal/timeline/timeline.go
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index 00000000..13663547
--- /dev/null
+++ b/internal/timeline/timeline.go
@@ -0,0 +1,5 @@
+// Copyright 2023 ROC. All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file.
+
+package timeline
diff --git a/internal/xds/README.md b/internal/xds/README.md
new file mode 100644
index 00000000..8ea9592e
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+++ b/internal/xds/README.md
@@ -0,0 +1,2 @@
+### xDS(Recommended Discovery System）
+推荐发现系统模块，目前还没实现，先占个位置～
diff --git a/internal/xds/xds.go b/internal/xds/xds.go
new file mode 100644
index 00000000..3f0f20b5
--- /dev/null
+++ b/internal/xds/xds.go
@@ -0,0 +1,5 @@
+// Copyright 2023 ROC. All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file.
+
+package xds