Putting other things aside, the appearance of several countdowns at once creates a strong sense of pressure.
These countdowns indicate the final time limit for enemies to appear, meaning the bosses won't automatically trigger unless approached in time.
If you enter the corresponding area and are discovered by the Demon Race chief, a boss battle will still trigger.
The objective of this Secret Realm is to rescue the general's daughter. Not only must you find the location where she's being held, but you also have to save her. If you die, the target dies, or you don't find the target, it all results in mission failure.
Theoretically, the safest approach is to take out the corresponding bosses in order, save the general's daughter, and then safely escort her out.
If you attempt a stealth rescue first and then try to escape with a liability who lacks cultivation, and accidentally trigger a boss battle, failure is almost guaranteed.
