I would be using short forms for the names of the characters henceforth so I've listed the names
Gu Qingcheng: GQC
Mu Jingyun. : MJY
Gu Nianfeng. : GNF
Mu Wentian. : MWT
Mu Xianxue. : MXX
Mu Ruyan. : MRY
Gu Bingchen : GBC
I would be using short forms for the names of the characters henceforth so I've listed the names
Gu Qingcheng: GQC
Mu Jingyun. : MJY
Gu Nianfeng. : GNF
Mu Wentian. : MWT
Mu Xianxue. : MXX
Mu Ruyan. : MRY
Gu Bingchen : GBC