Chou Collection, Middle Volume. Radical: Earth (tǔ). Kangxi brush strokes: 15. Page 238, Entry 22. Tang Rhyme (Tangyun), Collection Rhyme (Jiyun), Rhyme Compilation (Yunhui), and Correct Rhyme (Zhengyun) dictionaries record the pronunciation as zhui (falling tone), which is the same as the falling tone of chui. According to the Explaining Graphs and Analyzing Characters (Shuowen), it means to extend or be extravagant. According to the Approach to Elegance (Erya), in the section explaining ancient terms, it means to fall. In the Analects (Lunyu), it is written: Not yet fallen to the ground. In the Outer Commentary of Han Poetry (Hanshi Waizhuan), it is written: The stars fell and the trees groaned; the people of the state were all afraid. Also, according to the Collection Rhyme (Jiyun), it is pronounced shu. The meaning is the same. It was historically used interchangeably with the characters pronounced dui and sui, and all these forms appear in the classics and historical records.