diff --git a/web3/contracts/Lock.sol b/web3/contracts/Lock.sol
deleted file mode 100644
index 4d1557d..0000000
--- a/web3/contracts/Lock.sol
+++ /dev/null
@@ -1,33 +0,0 @@
-// SPDX-License-Identifier: MIT
-pragma solidity ^0.8.20;
-
-contract Lock {
-    
-    struct Event{
-        string eventName;
-        string evntVenue;
-        uint256 Time;
-        uint256 Duration;
-        string createrName;
-        address creatorAddress;
-    }
-
-    struct Person{
-        string Name;
-        bytes1 Gender;
-        uint256 Age;
-    }
-    Event public myEvent;
-    function createEvent(
-        string calldata _eventName,
-    string calldata _evntVenue,
-    uint256 _Time,
-    uint256 _Duration,
-    address _creatorAddress
-    ) public
-    {
-        myEvent.eventName = _eventName;
-        myEvent.evntVenue = _evntVenue;
-        
-    }
-}
\ No newline at end of file
diff --git a/web3/contracts/Nft.sol b/web3/contracts/Nft.sol
new file mode 100644
index 0000000..4ec221b
--- /dev/null
+++ b/web3/contracts/Nft.sol
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+contract Nft {
+    
+    uint256 currentTime = block.timestamp;
+    struct Event{
+        string eventName;
+        string evntVenue;
+        uint256 Time;
+        uint256 Duration;
+        string createrName;
+        address creatorAddress;
+        string imgUrl;
+    }
+
+    struct Person{
+        string Name;
+        bytes1 Gender;
+        uint256 Age;
+    }
+    
+    Event public myEvent;
+    function createEvent(
+        string calldata _eventName,
+        string calldata _evntVenue,
+        uint256 _Time,
+        uint256 _Duration,
+        address _creatorAddress,
+        string memory _imgUrl
+    ) 
+    public returns (uint)
+    {
+        myEvent.eventName = _eventName;
+        myEvent.evntVenue = _evntVenue;
+        myEvent.Duration = _Duration;
+        myEvent.creatorAddress = _creatorAddress;
+        myEvent.imgUrl = _imgUrl;
+
+        if (_Time < currentTime){
+            return 0;
+        }
+        else {
+            myEvent.Time = _Time + currentTime;
+        }
+    }
+}
\ No newline at end of file
diff --git a/web3/hardhat.config.ts b/web3/hardhat.config.ts
index c4ef851..7861ef0 100644
--- a/web3/hardhat.config.ts
+++ b/web3/hardhat.config.ts
@@ -2,7 +2,7 @@ import { HardhatUserConfig } from "hardhat/config";
 import "@nomicfoundation/hardhat-toolbox";
 
 const config: HardhatUserConfig = {
-  solidity: "0.8.19",
+  solidity: "0.8.20",
 };
 
 export default config;