diff --git a/_data/chains/eip155-1688.json b/_data/chains/eip155-1688.json
new file mode 100644
index 00000000..2dcaf4c8
--- /dev/null
+++ b/_data/chains/eip155-1688.json
@@ -0,0 +1,18 @@
+{
+  "name": "LUDAN Mainnet",
+  "chain": "LUDAN",
+  "rpc": [
+    "http://rpc.ludan.org:55001/"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "LUDAN",
+    "symbol": "LUDAN",
+    "decimals": 18
+  },
+  "infoURL": "https://www.ludan.org/",
+  "shortName": "LUDAN",
+  "icon": "ludan",
+  "chainId": 1688,
+  "networkId": 1688
+}
diff --git a/_data/icons/ludan.json b/_data/icons/ludan.json
new file mode 100644
index 00000000..673497de
--- /dev/null
+++ b/_data/icons/ludan.json
@@ -0,0 +1,8 @@
+[
+  {
+    "url": "ipfs://bafkreigzeanzqgxrzzep45t776ovbwi242poqxbryuu2go5eedeuwwcsay",
+    "width": 512,
+    "height": 512,
+    "format": "png"
+  }
+]