Jackson was born in Hong Kong on March 28, 1994 in an athletic family. His father is Wang Rui-ji, a former coach of Hong Kong national fencing team and a one time winner at the Asian Games in 1978. His mother is Zhou Ping, a gold medalist at the World Gymnastics Championships in 1982. When Jackson was 9, he and his older brother received gymnastircs training and won the 1st place in the Acrobatic Gymnastics Championship for men's pair category.
Jackson started his fencing career when he was 10. The first time his father brought him to a match, Jackson immediately fell in love with fencing and confidently said it's the sport of his life. Since then he has been trained by his own father as well as other professional coaches and achieved multiple awards and winnings for Hong Kong national fencing team.
Jackson attended American International School in Hong Kong since primary