(ECNS)-A 1,200-meter-long glass walkway hanging off a cliff is enjoyed by tourists in Zhusha Ancient Town, Guizhou Province.
A team of four sanitation workers is responsible for cleaning the side of the mountain below the walkway.
Wu Changping, one of the four, descended the 100-meter-high cliff with only a rope around his waist.
Two teammates hold the other end of the rope, with the fourth directing.
After picking up litter left by tourists for nearly an hour, Wu began to ascend.
In the past two years, they have climbed up and down dangerous cliffs numerous times.