Xiǎosān shàngmén tiǎoxìn, zhèngshì dāngchǎng gēn tā chǎo le qǐlai.
The mistress turned up at the door to provoke her, and the wife started a row with her on the spot.
Tips
usage
The concubines were 妾, 妾室 or 侧室; 正房 is another word for the principal wife. 室 "room" stood for the wife, who ran the inner household. Online, 正室 is used for a wife confronting her husband's 小三 (mistress).
