It is quite difficult. I strongly advise not to do it by yourself. Most people cannot do it (if you think you have excellent ability, you can try). Let me give you a simple example: my store's sales in the month before the 3.28 promotion this year were about 5,000 US dollars. After the promotion and policy adjustment, the sales dropped to about 2,000, and the lowest was 1,700+. There are too many things to know, and the traffic is seriously tilted to gold and silver medals. Small sellers basically have no life. Sometimes the trademark is required, and sometimes the physical pictures have to have the trademark. It is very troublesome.