Your lecture is nothing more than selling your own products. It must be difficult to do it in an apartment for the elderly. If you insist, I can help you find an apartment for the elderly in Shanxi. You can talk to the dean first, and then give a lecture, but I don't think the effect is very good, because there are fewer elderly people who can take care of themselves in the elderly apartment, and there are more elderly people who can't take care of themselves at all. If you have to go, you should go to a senior apartment for the elderly, but you should live in a senior apartment.