Researchers help shed new light on precious parts of shared WWII history between China and US allies, as Zhao Xu reports.

Barbara McMurrey, a 73-year-old from Texas in the United States, believes that her father, Major William McMurrey, still has a guiding hand on her, 70 years after his death.

"I was three when he was killed in 1944, during a fierce battle with the Japanese on the southwestern border of China," she said.