Frankly, if there had been a choice, Murong Bingyun really didn't want to get involved in Shen Xue's affairs.
Unfortunately, the Central Plains have always been more discriminatory towards the Ancient Desolate Country, and methods like arranged marriages through Capital City families were practically hopeless for them; many people were quite against marrying into the Ancient Desolate Country or taking their women as brides. The women from the Ancient Desolate Country were more unrestrained and completely different from those in the Central Plains, who saw them as promiscuous. Moreover, with the tradition of serving demons in the Ancient Desolate Country, it only made the Central Plains People even more uncomfortable.