Song Xuelan, a 92-year-old grandmother and recent Internet sensation, believes that her street snack business has helped to extend her life.

Song has been selling zongzi, a kind of rice dumpling, in Qingdao, Shandong province for more than 20 years. At 7 a.m. each morning, Song sets up her stand on Laiwu Street, with help from her youngest son. In the afternoon, she makes zongzi at home. Song's two elder sons are retired, and the youngest is unemployed.

Ever since Song went viral online, she has been selling 100 dumplings an hour, compared with 50 previously. Song receives a monthly pension of 1,000 RMB ($145 ), along with her zongzi income.

“I can support myself with my own hands, so there’s no need to bother others,” Song said.

Apart from some hearing loss and the occasional backache, Song remains in good health.