C2169 Strict Validation

Su Yang took out an Invisibility Charm and handed it to Lin Duo, exhorting him, "This is a special invisibility charm that I made specially. It has a time limit of fifteen minutes. After using it, you need to rest for one day before you can use it again."

"This Invisibility Charm is extremely powerful, equivalent to when I use the Invisibility myself. It can effectively conceal my body