http://pc.pcgames.com.cn/pcnews/1007/1955932_33.html
From this article, apparently the soundtrack was created by a group of artists. It mentions HongZhang Su (苏竑嶂) and Feeling Music Group.
Meanwhile another article claims that Feeling Music Group is associated with Japan's NHK channel:
http://www.jcku.com/music/28381.html