diff --git a/README.md b/README.md
index bf83a5b..d4310e5 100644
--- a/README.md
+++ b/README.md
@@ -200,20 +200,20 @@ Subnet proxy information will automatically sync to each node in the virtual net
 
 ### Networking without Public IP
 
-EasyTier supports networking using shared public nodes. The currently deployed shared public node is ``tcp://easytier.public.kkrainbow.top:11010``.
+EasyTier supports networking using shared public nodes. The currently deployed shared public node is ``tcp://public.easytier.top:11010``.
 
 When using shared nodes, each node entering the network needs to provide the same ``--network-name`` and ``--network-secret`` parameters as the unique identifier of the network.
 
 Taking two nodes as an example, Node A executes:
 
 ```sh
-sudo easytier-core -i 10.144.144.1 --network-name abc --network-secret abc -e tcp://easytier.public.kkrainbow.top:11010
+sudo easytier-core -i 10.144.144.1 --network-name abc --network-secret abc -e tcp://public.easytier.top:11010
 ```
 
 Node B executes
 
 ```sh
-sudo easytier-core --ipv4 10.144.144.2 --network-name abc --network-secret abc -e tcp://easytier.public.kkrainbow.top:11010
+sudo easytier-core --ipv4 10.144.144.2 --network-name abc --network-secret abc -e tcp://public.easytier.top:11010
 ```
 
 After the command is successfully executed, Node A can access Node B through the virtual IP 10.144.144.2.
@@ -279,7 +279,16 @@ Before using the Client Config, you need to modify the Interface Address and Pee
 
 ### Self-Hosted Public Server
 
-Each node can act as a relay node for other users' networks. Simply start EasyTier without any parameters.
+Every virtual network (with same network name and secret) can act as a public server cluster. Nodes of other network can connect to arbitrary nodes in public server cluster to discover each other without public IP.
+
+Run you own public server cluster is exactly same as running an virtual network, except that you can skip config the ipv4 addr.
+
+You can also join the official public server cluster with following command:
+
+```
+sudo easytier-core --network-name easytier --network-secret easytier -p tcp://public.easytier.top:11010
+```
+
 
 ### Configurations
 
diff --git a/README_CN.md b/README_CN.md
index e9509f5..94c3be6 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -199,20 +199,20 @@ sudo easytier-core --ipv4 10.144.144.2 -n 10.1.1.0/24
 
 ### 无公网IP组网
 
-EasyTier 支持共享公网节点进行组网。目前已部署共享的公网节点 ``tcp://easytier.public.kkrainbow.top:11010``。
+EasyTier 支持共享公网节点进行组网。目前已部署共享的公网节点 ``tcp://public.easytier.top:11010``。
 
 使用共享节点时，需要每个入网节点提供相同的 ``--network-name`` 和 ``--network-secret`` 参数，作为网络的唯一标识。
 
 以双节点为例，节点 A 执行：
 
 ```sh
-sudo easytier-core -i 10.144.144.1 --network-name abc --network-secret abc -e tcp://easytier.public.kkrainbow.top:11010
+sudo easytier-core -i 10.144.144.1 --network-name abc --network-secret abc -e tcp://public.easytier.top:11010
 ```
 
 节点 B 执行
 
 ```sh
-sudo easytier-core --ipv4 10.144.144.2 --network-name abc --network-secret abc -e tcp://easytier.public.kkrainbow.top:11010
+sudo easytier-core --ipv4 10.144.144.2 --network-name abc --network-secret abc -e tcp://public.easytier.top:11010
 ```
 
 命令执行成功后，节点 A 即可通过虚拟 IP 10.144.144.2 访问节点 B。
@@ -282,7 +282,15 @@ connected_clients:
 
 ### 自建公共中转服务器
 
-每个节点都可作为其他用户网络的中转节点。不带任何参数直接启动 EasyTier 即可。
+每个虚拟网络（通过相同的网络名称和密钥建链）都可以充当公共服务器集群。其他网络的节点可以连接到公共服务器集群中的任意节点，无需公共 IP 即可发现彼此。
+
+运行自建的公共服务器集群与运行虚拟网络完全相同，不过可以跳过配置 ipv4 地址。
+
+也可以使用以下命令加入官方公共服务器集群，后续将实现公共服务器集群的节点间负载均衡：
+
+```
+sudo easytier-core --network-name easytier --network-secret easytier -p tcp://public.easytier.top:11010
+```
 
 ### 其他配置
 
diff --git a/easytier-gui/src/components/Config.vue b/easytier-gui/src/components/Config.vue
index 6c008f7..1d64201 100644
--- a/easytier-gui/src/components/Config.vue
+++ b/easytier-gui/src/components/Config.vue
@@ -65,7 +65,7 @@ const publicServerSuggestions = ref([''])
 
 function searchPresetPublicServers(e: { query: string }) {
   const presetPublicServers = [
-    'tcp://easytier.public.kkrainbow.top:11010',
+    'tcp://public.easytier.top:11010',
   ]
 
   const query = e.query
diff --git a/easytier-gui/src/types/network.ts b/easytier-gui/src/types/network.ts
index 736d103..69f0c41 100644
--- a/easytier-gui/src/types/network.ts
+++ b/easytier-gui/src/types/network.ts
@@ -47,7 +47,7 @@ export function DEFAULT_NETWORK_CONFIG(): NetworkConfig {
 
     networking_method: NetworkingMethod.PublicServer,
 
-    public_server_url: 'tcp://easytier.public.kkrainbow.top:11010',
+    public_server_url: 'tcp://public.easytier.top:11010',
     peer_urls: [],
 
     proxy_cidrs: [],