This basement is supposed to give Zhu a headache for a long time?

it's frightening that the rooms here are all made of dream iron as thick as two meters!

the iron of the dream is a kind of iron ore unique to the abyss. After refining, the iron can withstand a great deal of force impact, pull, and have a certain effect of forbidding magic. Just a pair of shackles made of the iron of the dream can make old Zhu die before he has advanced. Now the whole room here is poured by this iron It can be imagined that the strength it can bear is so strong....