It was officially finalized on December 26th, and the ancient theme song "Nine Machines", Netease Cloud Music and QQ Music were released. Xiami Music is now popular online. "Nine Zhang Ji" is an ancient lyric song jointly written by Ye Xuanqing, Zhang Fugui and qi zhou. It was officially released on July 4, 217, and it is also the theme song of the TV series "Two-time Favourite".