Mu Qing indeed wandered for a long time after leaving Xie Lian and Feng Xin behind, mostly looking for more work to support his ailing mother. The jobs kept changing, but Mu Qing eventually settled in the Spring House, where, after protecting a girl from harm, he ascended for a second time as the War God, the Bringer of Spring, Xuanzhen.
Notes:
Author: As far as I remember, Mu Qing was originally just Xie Lian's assistant and only ascended to the Middle Heavens? Well, when Xie Lian was cast down, he stayed behind to cultivate. In my case, he simply wandered the world, ascending aimlessly, so to speak.
Translator: Guys, just in case, I'll remind you that I'm not English and my English is only at a school level. Also, I haven't read the novella in English, so the fandom words might be a little different. Sorry about that.