The Phnom Penh of the urine jar means to ridicule people, because people have no other ability but to play tricks on people.

This is Northeast dialect, which means "good mouth". Urine tanks and toilets are mostly made of mud. If they are inlaid with gold, their mouths will be fine. Mouth, mouth also. Metaphor is that people have a good mouth (but people are not very good); Or a metaphor for someone who can talk.

Northeast dialect is a branch of Sino-Tibetan language family tonal language, and it is the main dialect in Heilongjiang Province, Jilin Province, north-central Liaoning Province, eastern Inner Mongolia Autonomous Region and most parts of northeast Hebei Province.