Qin Pei and John Chiang are the same father and mother. Their father is Yan Hua (real name Jiang Keqi) and their mother is Hong Wei. After her father Yan Hua died, her mother Hong Wei remarried to another husband, Er Guang, and gave birth to her younger brother Dong Chengyi. John Chiang and Dong Chengyi each take their father's surname, and "Qin Pei" is a stage name.

Character introduction:

Qin Pei (Jiang Changnian), originally from Suzhou, Jiangsu Province, was born on1June 26th, 945? China and Hongkong film and television actors.

John Chiang (David Jiang),1born in Shanghai on June 29th, 947, is an actor, director, martial arts director and screenwriter from Suzhou, Jiangsu.

Dong Chengyi, 1957, born in Hongkong, China on February 28th, is a film director, screenwriter, actor and producer in China.

Reference to the above content: Baidu Encyclopedia-Qin Pei

? Baidu Encyclopedia-John Chiang

Baidu Encyclopedia-Dongsheng Yi