Chou Collection, Middle Volume. Radical: Earth (tǔ). Kangxi stroke count: 15. Page 238, Entry 03. Tang Rhymes (Tangyun), Collected Rhymes (Jiyun), Rhyme Compendium (Yunhui), Correct Rhymes (Zhengyun): Pronounced zhui (falling tone). Shuowen Jiezi: To be extravagant. Erya, Explanation of Words (Erya Shigu): To fall. Analects (Lunyu): Not yet fallen to the ground. Han Dynasty Poetry Anecdotes (Hanshi Waizhuan): When the stars fall and the trees groan, the people of the state are all afraid. Also in Collected Rhymes (Jiyun): Pronounced shu. The meaning is the same. The characters for falling and tunnel were used interchangeably in ancient times, and both appear throughout the classics and histories.