C816 The explosion of teleportation gate.

"But we have lost the opportunity to retreat again!" The guard said with concern.

"Indeed, the third line of defense is our last line of defense. However, the third line of defense is located on a relatively steep slope. Furthermore, after the heavy rain, the slope became slippery. If the zombies want to launch an attack, they won't be able to run. If we attack from the top of the mountain