In the "Guangyun," pronounced moxian (falling tone), same as "mian." The "Guangyun" explains it as the meaning of listening. The "Picang" explains it as concentrating attention to listen. Also, in the "Jiyun," pronounced mijin (falling tone), same as "min." The meaning is the same. Also, in the "Jiyun," pronounced manjing (falling tone), same as "ming." The meaning is to listen upward while walking.