C72 Go up and Shout Again

Bai Lee heard a knock on the door. He put his index finger on Mo Liu's lips and whispered to Bai Lee, "Don't make a sound. If you make a sound, all our efforts will be in vain. "

Mo Liu's eyes were wide open. He did not say anything, but his eyes had already told Bai Lee the answer.

Mrs Liu could not hear anything from the outside. She thought the two of them had not woken up yet