Jiang Yi was quite fortunate!
If he didn't have a spirit beast that could dig underground, he would definitely be spotted by those scouts that came from the Great Xia Kingdom and the Divine Martial Kingdom. If his spirit beast capable of traversing underground wasn't fast enough, he would have probably been spotted soon.
A few dozen Soul Travel Realm experts from the Great Xia Kingdom had arrived, searching as fast as they could. A few tunnels were found, but after going deeper into them, the scouts failed to find anyone. One of those tunnels was actually dug out by Big Huang when Jiang Yi arrived, and the other tunnels were already there long ago. Jiang Yi had escaped through another tunnel and had even collapsed it behind him so how was this group of people going to find him?