The Invisibility Talisman, as its name suggests, naturally has the effect of invisibility. Every honest, brave young person bursting with positive energy must have fantasized in their childhood about how great it would be to be invisible. If nobody could see you, how many things could you do that you wouldn't dare to do otherwise? How many places could you visit that you might never dare to in your whole life? Like, for example, the women's bathroom or the female bathhouse...
"Tsk, tsk, tsk... at a time like this, with Teacher Xu in imminent danger... and here I am thinking about all this nonsense..."