diff --git a/README.md b/README.md
index 3632f9b..51ebdd9 100644
--- a/README.md
+++ b/README.md
@@ -15,4 +15,4 @@ This is a sample project of [OpenZeppelin contracts](https://openzeppelin.com/co
 
 npm install @openzeppelin/contracts
 
-truffle-flattener contracts/GameItem.sol > GameItem.sol
+truffle-flattener contracts/ShuiJing.sol > ShuiJing.sol
diff --git a/contracts/GameItem.sol b/contracts/ShuiJing.sol
similarity index 83%
rename from contracts/GameItem.sol
rename to contracts/ShuiJing.sol
index d668610..6bc389f 100644
--- a/contracts/GameItem.sol
+++ b/contracts/ShuiJing.sol
@@ -6,6 +6,7 @@ import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
 import "@openzeppelin/contracts/utils/Counters.sol";
 import "./owner/Operator.sol";
 import "./internal/BaseInternal.sol";
+import "./internal/SponsorWhitelistControl.sol";
 
 contract GameItem is ERC721URIStorage,BaseInternal,Operator{
   using Counters for Counters.Counter;
@@ -15,7 +16,7 @@ contract GameItem is ERC721URIStorage,BaseInternal,Operator{
   }
 
   function awardItem(address player, string memory tokenURI)
-    public
+    external onlyMiner() 
     returns (uint256)
   {
     _tokenIds.increment();
@@ -26,18 +27,18 @@ contract GameItem is ERC721URIStorage,BaseInternal,Operator{
 
     return newItemId;
   }
-  function mint(address player,uint256[] memory tokenIds) public{
+  function mint(address player,uint256[] memory tokenIds) external onlyMiner() {
         for(uint8 index;index<tokenIds.length;index++){
             _mint(player,tokenIds[index]);
         }
   }
-  function awardItemData (address player,uint256[] memory tokenIds, string[] memory tokenURIs) public{
+  function awardItemData (address player,uint256[] memory tokenIds, string[] memory tokenURIs) external onlyMiner() {
         for(uint8 index;index<tokenIds.length;index++){
             _mint(player,tokenIds[index]);
             _setTokenURI(tokenIds[index], tokenURIs[index]);
         }
   }
-  function awardItemDataStr (address player,uint256[] memory tokenIds, string memory tokenURIs) public{
+  function awardItemDataStr (address player,uint256[] memory tokenIds, string memory tokenURIs) external onlyMiner() {
         for(uint8 index;index<tokenIds.length;index++){
             _mint(player,tokenIds[index]);
             _setTokenURI(tokenIds[index], tokenURIs);