diff --git a/content/en/docs/v4.1/03-installation-and-upgrade/02-install-kubesphere/02-install-kubernetes-and-kubesphere.adoc b/content/en/docs/v4.1/03-installation-and-upgrade/02-install-kubesphere/02-install-kubernetes-and-kubesphere.adoc
index e3903bd51..e46548f36 100644
--- a/content/en/docs/v4.1/03-installation-and-upgrade/02-install-kubesphere/02-install-kubernetes-and-kubesphere.adoc
+++ b/content/en/docs/v4.1/03-installation-and-upgrade/02-install-kubesphere/02-install-kubernetes-and-kubesphere.adoc
@@ -370,6 +370,7 @@ curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
 ====
 [,bash]
 ----
+# If you are accessing charts.kubesphere.io from a restricted location, replace charts.kubesphere.io with charts.kubesphere.com.cn
 helm upgrade --install -n kubesphere-system --create-namespace ks-core https://charts.kubesphere.io/main/ks-core-1.1.2.tgz --debug --wait
 ----
 
diff --git a/content/zh/docs/v4.1/03-installation-and-upgrade/02-install-kubesphere/02-install-kubernetes-and-kubesphere.adoc b/content/zh/docs/v4.1/03-installation-and-upgrade/02-install-kubesphere/02-install-kubernetes-and-kubesphere.adoc
index af0d48be9..8291e8c65 100644
--- a/content/zh/docs/v4.1/03-installation-and-upgrade/02-install-kubesphere/02-install-kubernetes-and-kubesphere.adoc
+++ b/content/zh/docs/v4.1/03-installation-and-upgrade/02-install-kubesphere/02-install-kubernetes-and-kubesphere.adoc
@@ -367,6 +367,7 @@ curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
 ====
 [,bash]
 ----
+# 如果无法访问 charts.kubesphere.io, 可将 charts.kubesphere.io 替换为 charts.kubesphere.com.cn
 helm upgrade --install -n kubesphere-system --create-namespace ks-core https://charts.kubesphere.io/main/ks-core-1.1.3.tgz --debug --wait
 ----