2. Uneven, this word should be matched before and after, and both words are diverse. It is best to provide examples and dare not jump to conclusions;
3. Frugality, which comes from the Law of Six Books, belongs to pictophonetic sound, and comes from human voice and girlish voice (qiān). Its original meaning refers to self-discipline and non-indulgence. Later, there were many extended meanings;
4. Yuan, one of the twelve branches, has the meaning of "year" in the ancient calendar, which means "in this year".