513 The Method to Save Lu Chong

Hu!

Ignoring everyone's shock, Zhang Xuan reached the ceiling and touched the mechanism.

Then, his fingers began operating swiftly, tapping on various protrusions on the ceiling.

Possessing the Library of Heaven's Path, Zhang Xuan could easily find the flaws within a mechanical trap. It was just like with the Crimson Metal Coffin before. Even though it was known to be 'unbreakable', in truth, if one were to find the flaws and exploit them, it wouldn't be a problem at all.

This mechanism was the same as well.

Kacha!

After a few taps, a crisp sound echoed and a boulder slowly split open, revealing a passageway. Zhang Xuan immediately dived into it.

The passageway was completely dark. There should be another mechanical system installed above the passageway to prevent the lake water from collapsing in.

After walking several dozen meters, he saw a gigantic boulder. As long as he knocked the boulder open, he should be able to return back to the bottom of the lake.