There is no small card in the hotel near the university.

A business card, also called a card (Cantonese writing card (kā) piece), was called a name thorn in ancient China, and it was a piece of paper indicating the name, organization, company and contact information. Business cards are the fastest and most effective way for new friends to get to know each other and introduce themselves. Exchanging business cards is the first standard official action in business communication.

The earliest appearance of business cards began in feudal society. During the Warring States Period, China began to form a centralized state. With the use of advanced production tools such as iron, the economy has also developed, which has led to the development of culture. Confucianism represented by Confucius and other schools have formed a scene of contention. Countries are committed to expanding their territory, supporting and spreading their own culture, and a large number of emerging nobles appear in the war. Especially after the unification of Qin Shihuang, China began a great reform: unifying national characters.