Zheng competed in the 2019 Junior Invitational at Sage Valley. In 2019, he finished second in both the IMG Academy Junior World Championship and the Circle K Junior Championship host by Otter Creek. He is the 2018 Ryan Moore AJGA Junior Champion and the 2018 New Zealand South Island Under 19 Champion. He came in fifth at the IMG Academy Junior Championship in 2018. He was nominated Auckland Young Sportsperson of the Year in 2017.