Answer: It’s a hand-disc version of the song.

Shi Lei is a professional percussionist and one of the earliest handpan players. The well-known episode of the TV series "Mr. Good", "Mist and Qingdai", was composed by him. In 2013, he formed the band "The Wind" with didgeridoo player Wang Mengying. It is a rare world music pure music performance group in China.

"Mr. Good" is produced by Shanghai Ningmeng Film and Television Media Co., Ltd., Shaanxi Cultural Investment (Film and Television) Yida Investment Co., Ltd., LeTV Information Technology (Beijing) Co., Ltd., and Beijing Changjiang Culture Co., Ltd. An urban emotional TV series co-produced by the company, directed by Zhang Xiaobo, starring Sun Honglei, Jiang Shuying, Wang Yaoqing, and Che Xiao, with special appearances by Zhang Yixing and Guan Xiaotong.