Ye Kai, Hongmian and others studied at the gate of the underground palace for three days.

They are always not allowed to enter.

Ye Kaidu was about to rummage through the "Golden Square for Breaking the Formation", but he still couldn't find a way to crack it.

In the past three days, Hu Chuan was not just watching, he ran to look through the classics left by Maimen over the years, and Cao Erba later joined them, but whether it was ancient books or jade slips, there was no explanation of this underground palace, as if Maimen had never known about the existence of this underground palace.

……