### 1.Query the Token Name
Call the name() function of the TRC721 contract to get the token name.
Return results:
### 2.Query the Token Symbol
Call the symbol() function of the TRC721 contract to get the token symbol.
Return results:
### 3.Query the Balance
Call the balanceOf() function of the TRC721 contract to get the balance of tokens for the specified account.
Return results:
### 4.NFT Transfer
Call the tranferFrom() function of the TRC721 contract for NFT transfers
Return results:
### 5.Approve the Control of an NFT to Another Address
Call the approve() function of the TRC721 contract to grant NFT access to other addresses
Return results:
### 6.Query All NFT information of a TRC-721 Contract of a Specific Address
(1).Call the function of balanceOf(address _owner) to query the number of NFT holdings
Return results::
(2).Call the function of tokenOfOwnerByIndex(address _owner, uint256 _index) to traverse all token_ids
The number of NFTs held by the above address is 2, so the index of the query is 0 and 1 respectively.
Return results:
(3).Call the function of tokenURI(uint256 _tokenId) to query the details of every NFT.
Return results: