We divide NFT into three levels. The actual role of each level of NFT is the same. It's all about opening activities in the App. But obviously they are all different. The biggest difference between them is the shape and the harvest. The income of the highest grade NFT will be 4 times that of the lowest grade harvest. This will attract more people to participate and buy. And they are all limited. We will protect the interests of investors through scarce quantities and ensure that healthy living NFT will not become very cheap.