Friendship card is generally a big cartoon made by several good friends to commemorate friendship, and then marked with a name, usually a nickname, which only the other party can understand. It originated in Japan.

Ai Kang is one of the largest foreign exchange, precious metals and futures traders in the world. It consists of several IKON companies, providing services and technical support, and promoting IKON companies and their financial products around the world.

The so-called real person logo is to make pictures of real people found in real life, such as pictures of stars and women. Plus the brush material font and the creator's creativity. It is common in the signature documents of various PS bars and bar friends.