Zeng Lei, 24, expels air from a syringe in the ICU at the affiliated hospital of Ningxia Medical University in the Ningxia Hui autonomous region, April 8. Zeng became a nurse after graduating from university in 2011. He had to overcome the embarrassment of choosing to be a male nurse, and now he is much more comfortable with taking care of patients. He takes five shifts at the ICU every week, and is not a stranger to overtime work. [Photo/Xinhua]