This was one of many similar blood chits issued to members of the 14th Volunteer Squadron, the American Volunteer Group, the CATF, and the 14th Air Force during the 1930s and 1940s. The main text (four columns on the right) reads:
"This foreign person has come to China to help in the war effort. Soldiers and civilians, one and all, should rescue, protect, and provide him medical care." The five smaller characters to the left of the main text indicates that the chit was issued by the Commission for Aeronautical Affairs of the Chinese Nationalist government.