That night, Yuan Tianxing spent some time thinking, then decided to talk to Lin Feng about it on the next day. No matter how, they needed to figure out what caused those underground creatures' abnormal behavior, so they could prepare themselves for what might happen in the future as early as possible.
The next norming, he called Lin Feng through the interphone.
"Hey, what happened? What made you call so early?" Lin Feng received the call once he sat down behind his desk. Yuan Tianxing wouldn't call him so early in the morning if nothing important happened.
"Yun Meng came back last night," said Yuan Tianxing, "She said there's a situation in the cave area. I asked her about the cause, but she didn't give me a clear answer. I want to talk to you about this when you finish your works."
