after killing the li trio's, Han Li obtain this treasure.
Base on Che Qigong "This Devil Sealing Lock is actually an incomplete Profound Heavenly Treasure that contains Chaotic Yin Yang Qi. Not only does it have its very own independent space, there are also 13 layers of ancient restrictions that have been cast onto the treasure by the top-grade formation masters of our sacred realm. Once someone is trapped in this treasure, they'll only be able to escape if they possess the ability to dispel Chaotic Yin Yang Qi on their own. Otherwise, even if someone were to remove the 13 restrictions from the outside, it still wouldn't do anything. In its complete form, this Profound Heavenly Treasure would even be able to trap a true immortal unless they just so happen to possess an ability that can counter this treasure. Even in its current form, it's still more than enough to trap a Sacred Ancestor like me,"
this Devil Sealing Lock was created in Elder Devil realm, so only the Sacred Ancestors of a elder devil race who are able to draw upon the power of laws of heaven and earth are able to make use of it. if an outsider were to obtain the treasure, it would serve no purpose. I just so happened to have recently broken into this restriction, if the spiritual sense clone had reached the space within the box, it would've been instantly destroyed by the Chaotic Yin Yang Qi,"