Kugou is a digital music interactive service provider with innovative technology in China, which is committed to providing perfect solutions for Internet users and the development of digital music industry. In cool dog music, the four functions of listening, watching, singing and playing are different, and "listening" is the cornerstone of the whole music ecology; The "Watch" section, with live broadcast function as the main function, forms audio-visual linkage with short music videos and self-made music programs; In the "singing" part, "being a judge" and "being attentive" are integrated into the online karaoke function. In addition, personalized tools such as Viper Sound, Double Speed Play, Music Recognition and Running Mode are provided. The fifth generation mobile communication technology (5G for short) is a new generation broadband mobile communication technology, which has the characteristics of high speed, low delay and large connection, and is the network infrastructure to realize man-machine interconnection.