Royalties are becoming the new dimension of competition in the NFT trading market. For a long time in the past, the royalty rule defined by OpenSea, the leader of the NFT trading market, is that the seller pays a royalty set by the project owner or creator (usually 10% of the transaction price by default) to avoid the problem of creators not being able to share in the proceeds as NFTs circulate on a large scale and appreciate in value. Similar rules have been adopted by LooksRare, Rarible, SuperRare, MagicEden, and others. But now, with the market slowing down, NFT competition is becoming fierce, new entrants have to take the royalties "to start", hoping to use this to stand out. For example, SudoSwap, the NFT AMM marketplace, directly eliminates royalties; X2Y2 has launched a customized royalty function that allows buyers to choose to pay 100%, 50% or 0% of the corresponding percentage of royalties.