You can't. In 2020, Zhengzhou Municipal People's Government issued the Regulations on Prohibiting Fireworks and Firecrackers in Zhengzhou City, which clearly pointed out Jinshui District, Erqi District, Zhongyuan District, Guancheng Hui District, Huiji District and Zhengzhou Airport Economic Comprehensive Experimental Zone, Zhengdong New District, Zhengzhou Economic and Technological Development Zone, Zhengzhou High-tech Industrial Development Zone and the built-up areas of xinzheng city, xinmi city, Dengfeng City, Xingyang City, gongyi city, zhongmou county and Shangjie District. As of June 38, 2024+10/October 3, Zhengzhou still implemented the policy of banning fireworks and firecrackers. So fireworks are not allowed in Zhengzhou.