This term, first used by Douyin users, refers to “disco dance.” It originated from a piece of popular disco music titled “Bow Chi Bow,” written by duo Peter Garnefski and Ferry Ridderhof. In the climax of that piece when the words “bow chi bow” are sung, that part sounds very similar to the Chinese pronunciation of “857,” which has given rise to the funny reference.
Nǐ zhōumò chūmén wán r le ma？
Did you go out and have fun this weekend?
Zhèzhōu zuòyè tèbié duō，méikòng a。Nǐ ne？
There was too much homework this week, so I didn’t. How about you?
Wǒ zhōuliù wǎnshang hé jǐge tóngxué qù bāwǔqī le。
I went with several classmates to dance disco last Saturday night.