Si Collection, Upper Volume Radical: Water (shuǐ) Entry: Su Kangxi strokes: 9 Page 617, Entry 01 Pronounced su. Same as su. Erya, Explanation of Water (Erya): To go against the current is called suhui; to go with the current is called suyu. Zuo Tradition (Zuozhuan), Year 10 of Duke Wen: The Viscount of Chu, Xi, followed the Han River and went against the current of the Yangtze River. Commentary: To follow the current is yan. To go against the current is su. It also means to face toward something. Zhang Heng, Eastern Capital Rhapsody (Dongjing fu): Facing the Luo River and turning one's back on the Yellow River. It is also used interchangeably with su. Book of Odes (Shijing), Odes of Qin: Against the current, I follow her. Textual research: Su dou, a ladle used in a boat for bailing out water, is found in the Erya. Respectfully note: Su is a scribal error for the character that indicates a ladle. The Erya citation is a scribal error for the Guangya. The entry in the Guangya, Explanation of Vessels, stating a ladle is called a xiang is correct. It should be written as the character for ladle, not as su. Respectfully corrected to: It is also used interchangeably with su. Book of Odes, Odes of Qin: Against the current, I follow her.