C1051 Meaning

In five minutes, Fang Rui was accompanied by a strong whistling sound. Some people might have thought that it was a Boeing 747 flying close to the ground.

"I'm back!" Fang Rui shouted as he entered the room. Almost no one could hear his voice.

After all, it was such a loud whistling sound that directly suppressed Fang Rui's voice. However, after hearing this sound