As for how to leave Biansu Shenhai City, Ning Cheng also asked several monks in a vague way. The answers I got were that the jade slips had not left Biansu Shenhai City. Even if you venture to Tai Suhai, you can't leave too far from Biensu Shenhai City, otherwise, you may not be able to find your way back. Once you get lost in Tai Suhai, you can only wait for death....