Fiendish Underworld Metropolis was without doubt Diabolical Dragon King's territory. It was hard for outsiders to even enter, unless they were permitted.

It was near impossible for Wu Yu and the others to go in, unless he had a plan. Which he did. Which was to transform into Primitive Demon King.

Although Primitive Demon King often moved in the vicinity of Fiendish Underworld Metropolis, but he was not one of them. He could enter, but had to be careful. Primitive Demon King had a friend within Fiendish Underworld Metropolis, and so could enter without problems.

As for Full Moon of Nanshan and Ye Xixi, they each used their respective techniques, one using Gone from the Skies and the other turning into a speck of black sand which Wu Yu carried.

In this way, the three could enter Fiendish Underworld Metropolis.

After making their plans, the trio rested for more than a month. They had more or less consolidated all their recent learnings, and then set off on their journey.

In this time they had left the black sea behind, finding a random void chasm in the...