The Tao Exorcist.

Late at night, a father throws his children into a kiln, muttering, “They’re no longer ours.” Their screams fade into the flames. Young exorcist Xiao Tuo suspects his classmate Nianqi is possessed, uncovering her stepfather Zhen-Kai’s use of dark rituals. As her siblings show disturbing behavior, Zhen-Kai plans a deadly purge. Xiao Tuo links the evil spirit to his own injured father, and together with Nianqi, uncovers a horrifying truth tied to a missing persons case from fifteen years ago.