diff --git a/cmd/plugchaind/cmd/root.go b/cmd/plugchaind/cmd/root.go
index 19c64b93e..66d35a64e 100644
--- a/cmd/plugchaind/cmd/root.go
+++ b/cmd/plugchaind/cmd/root.go
@@ -65,7 +65,10 @@ func NewRootCmd() (*cobra.Command, params.EncodingConfig) {
 	}
 
 	initRootCmd(rootCmd, encodingConfig)
-
+	overwriteFlagDefaults(rootCmd, map[string]string{
+		flags.FlagChainID:        ChainID,
+		flags.FlagKeyringBackend: "file",
+	})
 	return rootCmd, encodingConfig
 }
 
diff --git a/docs/tutorial/cn/README.md b/docs/tutorial/cn/README.md
index 3e2a09f1d..856a3d944 100644
--- a/docs/tutorial/cn/README.md
+++ b/docs/tutorial/cn/README.md
@@ -31,6 +31,8 @@ go version
 ```
 git clone https://github.com/oracleNetworkProtocol/plugchain.git
 ```
+> 如果克隆仓库比较慢或者没反应的情况，可以把克隆地址 `github.com` 换成国内镜像，已知的国内镜像有`github.com.cnpmjs.org`和`git.sdut.me/`
+
 2.  开启gomodule和设置终端GOPROXY
 ```
 go env -w GO111MODULE=on