What does "drinking grade three" mean?

Drinking Hua sanduo means having a banquet in a brothel or a common pub, and then inviting several geisha to accompany the wine, teasing each other and enlivening the atmosphere. What's more, in the process of drinking, I pose with geisha or make some obscene alcoholic drinks for entertainment.

But what you want to do after drinking in the end is usually solved separately. Later, the activities before and after the banquet were often called "drinking Hua San", which was an elegant statement of the ancients. Actually, it's just visiting brothels and looking for prostitutes to drink with them. In a more popular way, it is "picking up girls".

Extended data:

Since the Tang Dynasty, it has become fashionable for literati to get together for banquets, invite prostitutes to make banquets (or wine corrections), or offer wine by singing and dancing. This is now the so-called "escort". In the ancient society of China, citizens were chasing flowers and chasing willows, businessmen were generous, and playboys spent money like water.

Make brothels bustling and prosperous, and raise prostitutes; Prostitutes and urban life centered on tourism and metallurgy in turn promoted the development of industry and commerce and the prosperity of urban economy. In China societies such as Sui, Tang, Five Dynasties, Liao, Song, Xia, Jin, Yuan, Ming and Qing Dynasties, the establishment of brothels and profits and taxes have always been the "highlight" of taxation in various dynasties.

Baidu Encyclopedia-Drinking Huasan