Zhu's radical is Wang. What is this radical mainly related to?
Among Chinese characters, the words related to jade are mostly concentrated in the radical "Wang Bu" (some dictionaries are called "Yu Bu", which seems to be more accurate). In ancient Chinese, "Wang" and "Yu" were originally the same word. At first, there was no word "jade", only the word "king". "Wang" has three pronunciations, one of which is pronounced "jade", which means the same as jade. Only later, when a famous writer wrote official script, he added a dot to the word "Wang", which became the word "jade" today. All the Chinese characters beside the word "Wang" are related to jade.