Turning lights off to illuminate environmental protection

Li Tengfei tries to avoid using disposable items. The 23-year-old brings slippers when he travels and uses a drinking bottle rather than buying bottled water.

He believes it's important for university students to reduce the use of plastic bags and disposable chopsticks, since food delivery is popular on campus. And he has persuaded his roommates to use their own chopsticks when ordering takeout.

The senior from Hebei province has remained committed to environmental protection since he first volunteered for his university's Earth Hour activities as a freshman.