Brother Xiaosha is Zhao Yingjun. There is a line of subtitles at the end of "Keep You Safe": Dedicated to Brother Xiaosha, who loves to drink Coke. During the Guangzhou road show, director Dapeng revealed that "Brother Xiaosha" is his deceased friend, the famous musician Zhao Yingjun. Zhao Yingjun (July 28, 1977 to February 3, 2021), formerly known as Zhao Jian, was born in Fushun City, Liaoning Province, a male singer, musician, and actor in Mainland China. In 2004, Zhao Yingjun entered the entertainment industry by participating in the singing reality show "My Type My Show"; he later became popular after releasing the song "Exciting 2005". He has composed theme songs for films such as "Pancake Man", "Hong Kong" and "Detective Chinatown". He has released songs such as "Don't Leave Me" and "Send You a Little Red Flower"; and participated in film and television works such as "I Love Big Big Wolf 2" and "Sewing Machine Band".