The so-called signature means that you get a signature list in Dali with prizes, and then find a friend with a friend degree of more than 200, select him and use the signature list in the taskbar. There will be a signature later. Collect 20 signatures and you can get a fashion from the prize.

Often see official website, you can find solutions to many problems.

And often watch, for some problems, you can know before people who don't watch much, you can get ready or earn some extra money.