C243 It Was as Difficult as Ascending to the Heavens

Qin Feng frowned and opened his clairvoyance. Qin Feng was also shocked because he found out that this ice vault was actually a completely sealed large ice cave. This large ice vault was not simple, because it was very thick. Especially when there were a few walls mixed with mud, this thickness could not even be blasted open with ordinary fat eggs. That door was also a very heavy steel door