C1669 Three Sub-leaders.
Occasionally, some of the sea creatures would swim to the side of the elevator and look at the advanced human equipment curiously.
[Ding! Observing the Underground elevator, elevator knowledge + 1, structure engineering ability + 1, current progress: 1/10, current level: Beginner-level.]
[Ding! Viewing the wondrous scenery of the sea, ocean knowledge + 1!]
After a long journey