Goods purchased from cross-border e-commerce can be sold domestically. As long as the goods from cross-border e-commerce can be purchased, they are legal. As long as they can be mailed to China, they are your own goods and can be freely traded. You can also sell things on Xianyu.com, which is a website where idle goods can be freely traded. Now domestic e-commerce platforms have international trading businesses, and they are all allowed to be freely traded.