First find mine, and then if you need to fill in the number, there is a, if it is a return, there is a return return, then click on the return and fill in the number directly, and there is another, if you want to copy his, the number, to fill in other places, just copy and paste, then go to other places, fill in directly, that's it. If you don't know how to go to my personal center, there is also a customer service center, if you don't know how to consult customer service