Blessing’s Limit, The Mysterious Feather

"Due to the shelter being submerged even further, although the wind from the upper floor can be channeled down through the pipeline, stale air will still precipitate. Without a ventilation system, it might cause serious problems in the Underground Shelter!"

When creating an underground shelter for the first time, the game panel indicated that its development potential was poor.

One of the main reasons for that was that it would be extremely difficult to construct an underground air circulation system!

If ordinary people chose to be underground, they might not have needed to open the door for ventilation at first. However, it would be difficult to even build a window or ventilation system without mechanical assistance after a few months of development.

Therefore, during the first disaster, only Su Mo had chosen to go underground among the top ten shelters.