C1162 Plan B the Worst-case Scenario

Hee Tian could not help but admire Shen Yu.

Hee Tian could not help but suspect that Shen Yu was the one who created this tunnel.

However, after entering the tunnel, Hee Tian realized that the tunnel was not created by Shen Yu. Because of some traces in the tunnel, the initial estimate was that it was more than a hundred years old.

A hundred years ago