C278 Encountering the Army?

Ning Bai, who was shy in her pocket, had no choice but to use the few gold coins she had left to buy a few small loudspeakers. As for the way they used to send messages, it couldn't be compared to this. It was like heaven and earth.

After buying it, Ning Bai directly used one and sent out the words she wanted to say to Zheng Shuai through the small loudspeaker. In just a few breaths' time