The doorman was a learned and skilled person adopted by people with status and status in ancient times, and he had all kinds of people. In fact, it is a talent pool. At that time, the trend of adopting doormen was prevalent.
Guests are graded, and those who are capable are of high rank, and the treatment is certainly good (including food, clothing, housing and transportation). Feng Xuan, for example, was inferior when he started to work as a doorman at Meng Fujun. Later, he sang with a sword every day to express his dissatisfaction. The so-called "car-free magazine blamed Feng Xuan". Later, he was promoted to the top class.
The most famous one seems to be Meng Fujun during the Warring States Period. It is said that he raised more than 3, customers. The famous Mao Sui and Feng Xuan were his guests. The allusions of the three caves of cunning rabbits, self-recommendation, cock crow and dog thief, and standing out from the crowd come from these people.
In addition, Lu Buwei's men in the Qin Dynasty also had a lot of customers, and the famous Lu Chunqiu was written by these people.