Pan with her students during a class break. [Photo by Zou Hong/chinadaily.com.cn]

Pan has been tutoring children from all ethnic groups in the neighborhood－at no cost－after school hours for 25 years. Despite her low income, she managed to turn a 26-square-meter room in her house on the outskirts of Shule county into a classroom.

Munisar is one of the 2,000 children who have benefited over the years. She has been attending Pan's classes every day after school, and sometimes on weekends, for about a year.

"Grandma Pan is very strict with our homework and we are all a bit scared of her," Munisar said. "But I know she wants the best for us. I gave my cherries to her just to let her know that I am grateful."

Pan, who claims both Han Chinese and Uygur ancestry, had the idea of offering children－mainly those in primary school－free tutoring after noticing that many parents didn't have time or were otherwise unable to help their children with homework.

As a high school graduate, Pan believed she could do something for those children so they could keep up with their classmates and wouldn't mix with the wrong crowd.

"I could have made a fortune by being a translator, but the children's future is more important. For me, their progress and appreciation are the best rewards. It's something money can't buy," Pan said while flipping through a child's exercise book. She pauses on a page where the child wrote a message: "Grandma Pan I love you and please take care yourself."

Pan asks the children to be punctual and kind to others. "I want them to know that becoming a good person is more important than getting a good grade," she said.