Pronounced qiu yan (falling tone) in "Guangyun" and "Jiyun," same pronunciation as "zhǎn." "Shuowen Jiezi" explains it as the appearance of walking. Also, pronounced xu yan (falling tone) in "Guangyun" and "Jiyun," same pronunciation as "xuān." Same meaning. Also, pronounced qiu qian (rising tone) in "Jiyun," same pronunciation as "qiān." Same as the character "qí." See the explanation for "qí" for details.