The sales contract of the Western Zhou Dynasty is called "pledge", which is written on bamboo slips and divided into two parts, one for each party. Quality is a long-term contract for buying and selling slaves, cattle and horses; An agent is a short contract for buying and selling weapons and rare items; "Quality" and "agency" are made by the government and managed by "quality people".

Farewell is contract.

The loan contract appeared in the Western Zhou Dynasty. In Zhou Li Tian Guan Xiao: "Listen, say, blame and say goodbye". Responsibility refers to borrowing, and parting is a contract. Another form of Fu is different from pledge. Another form of Fu is to write only one loan on a bamboo slip, and then cut it in the middle, with the creditors and debtors holding half, and the words on the bamboo slip written in half.

Note: In the Western Zhou Dynasty, the pleadings of civil cases were also called "Fu Bie".

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