Fantasy of the Three Kingdoms supports upgrading and strengthening regardless of Generals, mounts, equipment or lands NFT. The technology behind it comes from ERC-3664, which will maximize the decentralization of the game. Any upgrade or strengthening will change the attributes of the NFT you hold, and you can resell the newly generated NFT at any time. When upgrading reaches a certain level and the appearance changes, the image resources of NFT will also be updated and synchronized to IPFS to ensure that players can prove that their NFT is the original version and cannot be tampered with. On some platforms that support the NFT protocol, players can verify the NFT they hold as their avatar to show the powerful General you own.