The middle-aged man gave them a mysterious look.
Lin Yuanyang felt a tightness in his heart.
At this moment, the voice of the train attendant suddenly sounded in the carriage.
"Attention passengers, the train is about to enter a semi-polluted zone. The ventilation system in the carriage will be shut down soon. Please wear your protective clothing and gas masks to prevent any discomfort..."
The middle-aged man across from them immediately sat back, picked up his gas mask, and skillfully put it on his face, tightening the zipper on his protective suit.
"Xiao Yang, put on your gas mask quickly."
Bai Xiaotang, who was already dressed in her protective gear, saw that Lin Yuanyang had not moved and quickly reached over to put the gas mask on his face, also putting the hood of his protective suit over his head and pulling up the zipper.
After everything was done, the train entered the semi-polluted zone.
