Li Xinxiu, 46, is a tower crane operator working at the construction site of the second-phase project (east section) of the Nanjing Financial City.

Sitting in the 2-square-meter crane operator's cabin at an altitude of 416.6 meters on top of the main tower, Li skillfully manipulates the handle to lift the hook, swing the arm, lift building materials and accurately transport them to the destination.

"For tower crane operators, safety is the premise," says Li. "It is important to keep focused, careful and patient."

Seeing skyscrapers rising from the ground, Li feels proud she can be part of it.