"Clifford" Louie Yim-qun, also known as Louie Yen-chung, was a Chinese-American pilot and military officer in the Republic of China. Louie's father was from Taishan county, Guangdong, China, but Louie was born in Seattle, Washington. He obtained a private pilot's license at the Portland Flying School, Oregon, and went to China in 1933. One of the other pilots in Portland was Hazel Ying Lee, who later became his wife. She was the first Chinese American to volunteer for the Women Airforce Service Pilots. Louie died in 1999 in Taipei, Taiwan.

Hazel Ying Lee was an American pilot who flew for the Women Airforce Service Pilots (WASP) during World War II.