Interesting! First step is to search the clocks and the walls to see if this room is a dead end or if there are other ways out.

Secondly, going by the map I made of their progress so far, there's an unexplored path to the left of the wall clock on the X branch. They'll investigate that route next. Dan Heng will try to float over the pit trap and checkerboard trap whilst carrying Mukuro as before.