There are numerous such cases, tales of generosity that reaffirm your faith in humanity.

"I answered phone calls from caring compatriots, one after another, every single day; I can fully feel the sense of patriotism and the spirit of solidarity showed by Chinese people when facing difficulties," Tan says.

While serving the community as a social worker, Tan says, she gained a lot from the work.

The experience has boosted her sense of responsibility, and also motivated her. She majors in environmental science and engineering, and will further study toxicology for her master's degree at Beijing Normal University.

"It's time for the younger generation to make a contribution to the country," she says.

Tan's mother, Xu, says she felt proud of her daughter's decision to work as a volunteer in such a difficult situation. It's a good opportunity for Tan to step out of the "bubble" offered by her parents who've been taking good care of her, Xu says.

During the crisis, Tan learned that some people around her were infected with the virus and died, and she witnessed how medical staff raced against the clock to save lives. She certainly saw the best of her compatriots.

She realized that she should cherish the time that the family spends together, and reminded herself to be more expressive in speaking of her love for her parents.

In recent months, she could meet her mother for only several hours a week. The rather shy daughter started to use the time to express her love and care for her mother.

And her mother has noticed the change in Tan. "I feel that we've switched our positions," Xu says. "I used to look after her, however, in recent weeks, she always actively prepares meals and hot water as well as washes fruit for me."