India, Jan. 6 -- A Chinese man struggling to raise millions of yuan for his wife's cancer treatment has received an extraordinary act of kindness after a mystery donor gifted him 50 tonnes of sweet potatoes, according to a report by South China Morning Post.

The man, 35 year old Jia Changlong, was recently seen selling sweet potatoes at a street stall in Jinan, in Shandong province. Jia is originally from Dezhou in the same province, while he and his wife, surnamed Li, now live in Yantai with their eight year old son.

Jia and Li were secondary school classmates before getting married. Li, a housewife, was diagnosed with acute myeloid leukaemia in July. After undergoing initial treatment, she is currently recovering at home.

So far, the...