Tong Zhengguo receives her bachelor's degree in ecomomics from Hebei United University on June 5, 2012. [Photo/icpress.cn]

A 65-year-old woman in North China's Tianjin applied for postgraduate studies for a third time, making her famous as a "postgraduate grandma".

Tong Zhengguo, who graduated from Hebei United University in 2012, is preparing for the postgraduate entrance exam at Tianjin University of Technology and Education. She failed the exam twice before due to her English score, China News Service reported.