Describe the train of thought: We can start by introducing the nature of New Year's Eve, then introduce what this custom is like, and finally introduce a feature of New Year's Eve. Text:

The Chinese nation has a strong sense of family. On some important days, the whole family is always reunited. ?

The Chinese nation has a strong sense of family, and there will always be family reunions on some important days.

New Year's Eve is an indispensable custom. They usually enjoy a big meal on this day. Jiaozi and fish are essential in the reunion dinner on New Year's Eve. ?

New Year's Eve is an indispensable custom. They usually enjoy a feast on this day. Jiaozi and fish must be eaten at the New Year's Eve.

Some people put a coin in a jiaozi. People who eat this jiaozi will be considered a lucky guy. ?

Some people put a coin in the jiaozi. People who eat this kind of jiaozi will be considered as a lucky guy.

Fish can't be eaten, because the fish uses the partial sound to indicate the extra things. It represents the hope of a prosperous year, with rich and even extra wealth and luck.

This kind of fish can't be eaten, because this kind of fish uses a partial sound to indicate superfluous things. It represents the desire for a good harvest, wealth and even extra wealth and luck.