Shunfeng Escort

A "Biaoju" (Escort), also known as a "Biaohang" is the predecessor of security escort companies and security companies, and is a tertiary security and safety service, commercial organisation. The structure of a Biaoju is a partnership and a parallel shareholding system, similar to that of a lawyer's firm or an accountant's firm. The apprentice finishes their apprenticeship after 3 years, and became a Biaoshi, also known as Daguanye, get the stock of Biaoju.

The flag hung from the cart was called the "Biaoqi". The purpose of hanging the flag when delivering cargo is to let the visitor know that, depending on the status of the Biaoju in the underworld, the bandits and robbers have to estimate their strength before they act.