C249 Sudden distress

Zhang Chun pressed the disposable cup of water against the wall, carefully listening for any movements.

A clear sound of 'dong dong dong' could be heard from the disposable cup of water.

Zhang Chun's face changed greatly, he turned and looked at Lin Hui and Lin Xue, "Could it be that someone is digging a tunnel?

"

"That's right," Lin Xue nodded her head, confirming Zhang Chun's answer