C1414
Many things happened with a causal link. If it wasn't for Mountain Demon possessing Aunt Lee to deal with Yang Fann, he wouldn't have ended up in Yang Fann's hands, being deeply hypnotized and becoming Yang Fann's slave.
And there was also Chief of Special Operations Branch, Ren Yi, and Deputy Chief Lee Jian. If it wasn't for them plotting Jade Spring Mountain Villa, in the end