Adventure in Warring States

Jiang Wang, a regular high school student, accidentally got a time travel into the Warring States period while playing PUBG! A mysterious old man gave him a divine artifact Nine Celestial Plate and a hair demon who even forced him to shoulder the responsibility of saving the world. Since then, he was chased by all master-hands including Zhuangzi, Xunzi, Mozi, etc. What would happen to him? Would he fulfill his mission?