The map is indeed a map of this place, and the numbers on the map can be found in the passage.
They are currently at an entrance and soon see a room as they follow the map.
This place is a bit like an underground laboratory, but the rooms have been occupied by Yingying Monsters, arranged into birth chambers.
Round pits made of mucus mixed with strange things, one after another, and some contain a huge egg.
Some have already hatched, leaving only eggshells.
Inside, Yingying Monsters are guarding the eggs; some are inspecting them, some are lying on the ground, and some are pacing around.
"They're oviparous animals." Jih Youtang clicked his tongue.
All the rooms are like this; this place is evidently the lair of those monsters.
Jih Youtang doesn't know what he's looking for, checking each room.
Chuzheng wondered inwardly and casually asked Xi Mu, "What is he looking for here?"
Xi Mu was somewhat absent-minded, "Looking for the biggest BOSS."
"Hmm?"
