diff --git a/mover/guoying2026/code/task6/my-first-sui-dapp/src/main.tsx b/mover/guoying2026/code/task6/my-first-sui-dapp/src/main.tsx
index 55f323a5d..db3a81acc 100644
--- a/mover/guoying2026/code/task6/my-first-sui-dapp/src/main.tsx
+++ b/mover/guoying2026/code/task6/my-first-sui-dapp/src/main.tsx
@@ -15,7 +15,7 @@ ReactDOM.createRoot(document.getElementById("root")!).render(
   <React.StrictMode>
     <Theme appearance="dark">
       <QueryClientProvider client={queryClient}>
-        <SuiClientProvider networks={networkConfig} defaultNetwork="testnet">
+        <SuiClientProvider networks={networkConfig} defaultNetwork="mainnet">
           <WalletProvider autoConnect>
             <App />
           </WalletProvider>
diff --git a/mover/guoying2026/readme.md b/mover/guoying2026/readme.md
index 8d1a674ea..73c1604ea 100644
--- a/mover/guoying2026/readme.md
+++ b/mover/guoying2026/readme.md
@@ -44,7 +44,7 @@
 - [✅] call swap CoinB-> CoinA  hash : 4R8GrVfQWQjHd5hqKAbyYN3wbViF38Lmr7etDxb82UXu
 
 ##   06 Dapp-kit SDK PTB
-- [] save hash :
+- [✅] save hash : VPDnwHH4yDSdvRzRh2SqHMQbwn2wuJ4ddhUEuKCo4Lt
 
 ##   07 Move CTF Check In
 - [] CLI call 截图 : ![截图](./images/你的图片地址)