What do you mean by collecting skin and pouring rice in Cantonese?

Piece-removing: Legend has it that a dragon gave birth to nine sons, the ninth of which is Pixiu. Its big mouth has no anus and can only go in but not out. It is very popular among gamblers. In the old days, casinos often placed a Pixiu at the door, which meant that they could eat everywhere and earn nothing. When the work was done at night, they would take it back from the door, so the work was called "Pixiu". In Cantonese, "Pixiu" and "Pixiu" mean "Pixiu". The word "pi" has the same pronunciation as "pi". Over time, "shui" replaced "shui", which means to tell people to shut up/stop, and it is a bit vulgar.

Pouring rice: "Mi" is the main word of Cantonese people. Rice is one of the grains. In the past, rice was considered as wealth. If you throw away the rice, you will throw out the valuable ones. By extension, it means that it is not helpful, and it is often used as an adjective. Now it has developed to refer to black humor, cold jokes or nonsensical and meaningless behaviors. There is a saying in Cantonese called "Eat food and do nothing, do it and smash it", which means eating without doing anything, doing things and doing them wrong. Its meaning is close to pouring rice.