On September 9, Elyn MacInnis (Chinese name: Mu Yanling), a descendant of a lieutenant in the American Flying Tigers, visited the Memorial Hall. Entrusted by Gail Harris (Chinese name: Bi Lehua), the niece of former Jinling University professor Oliver R. Caldwell (Chinese name: Ke Gujing), Mu Yanling and Lin Yinan, an associate professor at East China University of Science and Technology, donated a piece of evidence of Japanese aggression against China from the family's collection to the Memorial Hall.

This piece of evidence is a propaganda item specifically created by the Japanese for Chinese civilians. It is presumed to be a leaflet distributed between the end of the Battle of Shanghai and the fall of Nanjing, with the aim of undermining the resistance will of the Chinese people.

According to Lin Yinan, in 1937, Oliver's sister, Muriel Caldwell Pilley (Chinese name: Ke Miaoyu), and her husband, John Pilley (Chinese name: Bi Li), obtained this piece of evidence while teaching at the American School in Shanghai. For 88 years, Muriel's family has preserved it carefully.

As a descendant of the Flying Tigers, Mu Yanling pays special attention to historical materials related to the Flying Tigers. She donated a copy of the March 30, 1942, issue of the magazine Life, which she collected in the United States many years ago, to the Memorial Hall. The magazine contains accounts of the Flying Tigers' combat experiences in Myanmar and introductions to its members. Mu Yanling said, "I hope more people will learn about the history of the Flying Tigers."

This marks Mu Yanling's third donation of historical artifacts and materials to the Memorial Hall, following previous donations in 2018 and 2019.

The memorial hall presented Mu Yanling with a donation certificate.

Mu Yanling's father-in-law, Donald MacInnis (Chinese name: Mu Airen), was a lieutenant in the American Flying Tigers who supported China during the War of Resistance against Japan.