Mao Collection, Upper Volume Radical: Heart (xīn) Quan Page 385, Entry 19 Tang Rhymes (Tangyun): Pronounced quan Collected Rhymes (Jiyun): Pronounced quan Explanation from the Explaining Graphs and Analyzing Characters (Shuowen): Careful. Derived from heart, with quan acting as the phonetic component. Long Commentary (Changjian): A whole heart signifies carefulness, implying a warning. Also, Broad Rhymes (Guangyun): Pronounced quan. To bend or curl. Also, Collected Rhymes (Jiyun): Pronounced qian. To be cautious.