Which nine doors are the old nine doors?

The old nine doors are divided into three doors: the upper door, the flat door and the lower door. Laojiumen is one of the nine grave-robbing families in Changsha, which was mentioned in the book Tomb-robbing Notes by Nanpai's uncle. It's called Old Nine Gates, also called Nine Gates Prefect. The representatives of the nine schools are: February Red, Banbi Li, Chenpi Asi, Wu Laogou, Hebei Laoliu, Huo Xiangu, Qi Tiezui and Xie.

Shangsanmen has a well-off family and strong strength. Pingsanmen mainly rob tombs and can be thieves. The next three are engaged in business, but mainly selling antiques. Therefore, Xiasanmen and Heping Sanmen are closely related to each other, but they are separated from each other.

At that time, Laojiumen was famous and influential, and its sphere of influence covered all aspects of cultural relics smuggling. Almost all funerary wares pass through one of them when they flow out of Changsha. There are many explanations about why it is called "Nine Magistrates".

Among them, the highest recognition is that there are nine gates in ancient big cities, and businessmen who enter and leave the city must choose one of them, which means the old nine gates. To do business in Changsha, you can only choose one of these nine forces, and there is no other way.