Duo Ji is originally from Gaoxiong, Taiwan. When he was 15 years old, he started working as an apprentice chef at a place called Hai Jiu Jia in Hai Feng, Guangdong, China. At the age of 22, he came to work at the Ma Ming Lou, in Yokohama's Chinatown. The day he turned 26, he opened his own restaurant, the Ajiichi Chinese Restaurant, in Yokosuka. He met his wife, Lin Xia, while they were working at Bameirou together.
Duo Ji sometimes quarrels with Lin Xia who always dotes on Wang Guang Ji, his apprentice and delivery boy. He is very strict about discipline and this is reflected in his cooking. Although a bit stubborn, nevertheless, he is a good man by nature.
- Duo Ji's zodiac sign is Aries and he has a B blood type.