After finishing her sixth chemotherapy session, Duoduo received a wig from the charity program.

"She was too young to understand the meaning of beauty, but she showed us a smile after wearing the wig," Yang said. "Her smile is my biggest happiness.

"Duoduo will keep wearing the wig till her hair grows longer. Without being afraid of playing with others due to hair loss, her dream of playing outside can finally come true."

Zhang Yuan, head nurse of the pediatric oncology department at First Bethune Hospital of Jilin University, said: "For those young patients, the treatment may become a tough time in their memories. It would be another blow for them when they meet strangers' curious stares and inquiries about their bald heads.

"With the help of the wigs, they can regain confidence and happiness."