User blog comment:Zelnite67/Can i OTK Xie Jing with this squad?Please help./@comment-27337786-20151207224424/@comment-26336535-20151208015732

Some things to add here:

Element buffs don't work with Weakness buffs like Zedus, Kira, or Maxwell.

I believe Xie' Jing has some resistance to weakness buffs (not 100%, just some), so keep that in mind.

RNGesus might decide to smite you and make only 2 or fewer of your units crit, in which case you should pray and retry.

If you want to insure an OTK, (if you have enough cost) make a semi-suicide squad to tear her health down a bit (down to 75% maybe?) and that should work out pretty well.