After being selected into the national youth tennis team, Zheng represented the country in the 20 14 Vietnam World Youth Cup tennis qualifier and won the third place in Asia. In 20 15, she won the European Junior Tennis Tour in Portugal at the age of 14. At the 20 18 French Open, China players occupied three high-seed seats, among which Zheng occupied one, which was classified as 1 1.
On the way of learning tennis, Zheng has always been good at brave attack. When Zheng 12 years old, he directly broke the opponent's straight clap with a serve in a national competition. At that time, Zheng's serve speed reached 170km/h, that is, 47 m /s, which is rare in China and even in the world.