@TNMPChannel shou2 is simply the vernacular reading for the character 熟 (for most senses ― “ripe; familiar; etc.”), compared to shu2 which is the literary reading. shou2 neng2 sheng1 qiao3 is a common variant for this word. JJ Lin had a song named 熟能生巧, and you can hear his pronunciation in the song here. Wyang (talk) 11:51, 8 September 2017 (UTC)