Hai Collection, Lower Volume Radical: Black (hēi) Page 1521, Entry 14 Pronounced an (rising tone) According to the Explanation of Characters (Shuowen), it refers to the dark black color of fruit. According to the Extended Rhymes (Guangyun), it is written as a compound form. It also refers to a sudden arrival. According to the Xunzi, Strong State Chapter (Xunzi, Qiangguo pian): It descends suddenly like a thunderstrike. Yang Liang notes: It describes a sudden appearance. It represents a black color, similar to a dim appearance. Also, according to the Collected Rhymes (Jiyun), it is pronounced yan (falling tone). Also pronounced an (falling tone). Also pronounced yin (falling tone). The meaning remains the same.