"We gave priority to the beds with children who have to attend online classes. Other patients are able to use the network in the corridors and in most areas on each floor," Zheng explained. "The elderly can also now keep in contact with their family through video calls."

The shortage of tools has been a major impediment to his work, and so Zheng has had to get creative.

"When I repaired the sewers, circuits and water dispenser at first, I relied only on a two-yuan (30 cents) electric pen and self-made tools," he said.

On April 11, Zhang was finally eligible to be discharged, but decided to stay.

"My parents didn't know I was in the hospital. I didn't want them to worry about me. More importantly, the hospital is really short of maintenance personnel. I'm afraid there will be more problems that can't be solved if I go home," he said.

Shao Jun, who is in charge of the temporary Party branch of the Lianliang makeshift hospital, was moved by Zheng's selfless behavior.

"For the people in the hospital, Zheng's deeds will motivate others to create a better and more convenient living environment for everyone," Shao said.

"His stay after recovery will also eliminate people's fear of the virus."