C27 The Zuo Family Is in Danger

"Grandpa. " Zuo Mao knocked on the door.

"Mao? Come in. " The old man's voice came from inside.

Zuo Mao pushed open the door and walked in. The old man was sitting on a hassock, seemingly cultivating. The old man opened his eyes when he saw Zuo Mao enter.

The old man smiled. "I haven't seen you for the past few days. Are you busy cultivating?"

Zuo Mao nodded slightly