C213 Good News about Being Caught

When Zixin was halfway through, he suddenly realized that there was a signal on his phone. He was overjoyed and immediately sent a message to his dad.

Lu Shengmo received a message from his son halfway through the conversation. He opened it and took a look.

"Why did it stop?" Su Weiyi asked.

Lu Shengmo looked up at the ceiling, "Is this a ventilation duct?"

Duan Xiao nodded, "Yes