Aside from the soft human skin mask in Thousand Destruction's lunchbox, there was also a set of northern clansman's clothes. There was even the emblem of Sword Crafting Hall on them.
Once Happy was dressed, Thousand Destruction smoothed out his clothing and brought out a bronze mirror from the lunchbox.
"This is your current image. Mu Li is your identity in the mighty northern clan. You're a disciple who transports materials to Sword Crafting Hall. That should not be a problem for you with your arm strength.
"But you'll have to be careful. The temperature in Sword Crafting Hall is incredibly high! You'll be using up a lot of your qi. Every Sword Crafting Hall disciple has a unique qi cultivation technique that can ensure that their qi is constantly circulating.
"Sword Sect disciples and normal martial artists will not be able to get close to it, so you must be careful not to reveal your tracks."