"I sang to cheer up the students and myself," said Huo, who is also a member of the school staff choir.

Encouraged by Huo, students including members of the University's student choir stood on the balconies of their dorms and sang along with her. Some students posted moments on their WeChat accounts that "the most uplifting moment of the day was singing with Huo", according to the university.

"It's incredible to have the students join me in singing. Delivering meals every day is a tough task, but it's fulfilling and I'm happy to serve students in this unique manner," Huo said.

Huo said she carries a mobile Bluetooth speaker which she uses to broadcast the songs while delivering food.