Ultraviolet lamps

"I'll be right there. I'll drive after I'm done smoking. I won't have time on the road later." Old Zhang raised the cigarette butt in his hand.

"Don't smoke on the road. Drive quickly after you smoke, or you won't be able to make it in time." Old Yan warned.

"I know. You're even more naggy than I am." Old Zhang said as he took a deep breath and finished the cigarette in his hand. Then, he stubbed out the cigarette and threw it into the trash can.

"Be careful." After old Yan finished speaking, he walked out of the bus terminal and prepared to go home.

Ol 'Zhang and ol' Yan took the same bus. They would be on the road for two days and take a day off. Today was ol 'Zhang's last bus.

Old Yan got off work more than an hour earlier, so he came over to give him some instructions.

The little girl they were talking about was Shen Min.