Hey, pronunciation: wǔ. In the Warring States period, the explanation of this word was: 1. It means powerful. Those who violate our tribe will be punished. 3. Hand needle, seal (Japanese characters). The phonetic notation 19 13 was formulated by China phonetic unification association, and 19 18 was issued by the Ministry of Education of Beiyang government, with a total of 39 letters, arranged with "ㄡ" at the beginning; In 1920, the alphabetical order was changed and a letter "ㄜ" was added, making a total of 40 letters.

Explanation:

Interpretation is a Chinese word, pronounced jishì, which means to think on the basis of observation and reasonably explain the reasons for the changes of things, the relationship between things, or the law of their development. From the biography of Chen Yuan in the later Han Dynasty.