You Collection, Upper Volume Radical: Speech (yán) 16 strokes Page 1175, Entry 01 According to Tang Rhymes (Tangyun) and Collected Rhymes (Jiyun), it is pronounced yi (falling tone). According to Explaining Graphs and Analyzing Characters (Shuowen), it denotes the appearance of smiling. Also, according to Collected Rhymes (Jiyun), it is pronounced xi (entering tone), denoting the sound of laughter. It is sometimes also written in a variant form (xi). According to Correction of Character Interpretations (Zhengzitong), its common usage as a posthumous title to summarize a person's life achievements is incorrect.