In IPO area, Mr. Zheng has leaded or participated in over 10 initial public offerings, including IPOs of Shenzhen IN-CUBE Automation co.,ltd. (301312), Lubair Aviation Techonology Co., Ltd. (001316)， T.Y.M (301178), Sanyou Corporation Limited (300932）, Hunan Heshun Petroleum Co.,Ltd. (603353), Litian Pictures Holdings Limited (09958.HK), Shenzhen Genvict Technology Co., Ltd. (002869), Suzhou Hycan Holdings Co., Ltd. (002787), Shenzhen Jiawei Photovoltatic Lighting Co., Ltd. (300317), Shenzhen Sunline Tech Co., Ltd. (300348), New Trend International Logis-Tech Co., Ltd. (300532) and many other companies.

In National Equities Exchange and Quotations Listing area, Mr. Zheng has leaded or participated in the listing of OMS Machinery Co., Ltd.（833340），Fapon Biotech Inc. （838391）, Shenzhen Jiaxinjie Technology co., ltd.（430487）, Guangzhou Colortech New Materials Co., Ltd.（831163）, Shenzhen Meizhigao Technology Company（834765）and many other companies.

In the field of mergers and acquisitions and refinancing, Mr. Zheng has provided legal services for the acquisition of Zhongshan POSO Lighting Co., Ltd. by Jiawei Renewable Energy Co., Ltd. (300317), the acquisition of Tianjin Beihai Communication Co., Ltd. by Beijing Century Real Technology Co., Ltd.  (300150) through issuing shares, the acquisition of Changzhou Ruijie New Materials Technology Co.,Ltd.by Suzhou Hycan Holdings Co., Ltd. (002787) through issuing shares and raising matching funds, the major asset sale of Guangxi Hechi Chemical Co.,Ltd. (000953) and the acquisition of Chongqing Chemi-tech Co., Ltd. by issuing shares and raising matching funds (SZSE Top 10 Representative M&A Cases in 2019),  the acquisition of the listed company Terca (002213) by Chuangtong Kerry, the acquisition of Shenzhen Chip Collecting Group Microelectronics Technology Ltd. by Shenzhen Dawei Innovation Technology Co.,Ltd. (002213)，the public offering of convertible corporate bonds by Suzhou Hycan Holdings Co., Ltd. (002787), the non-public offfering of shares by Suzhou Hycan Holdings Co., Ltd. (002787). Mr Zheng has also provided legal services on the acquisition of Shenzhen Huaan Limin Liquefied Pettioleum Gas Co., Ltd，Huahai Trading Company, Changsheng Building, Huizhou Fuel Industry Corporation and other large-scale projects.

In the field of private equity investment and financing, Mr Zheng has provided legal services for many private equity funds such as Joint Fortune Capital, Yiben Fund, Galaxy Capital, Sinopharm-cicc Fund, etc., mainly including serving as investment legal counsel for Junfeng Fund's investment in a film and television company in Zhejiang, a cultural company in Beijing, a chip technology company in Shenzhen, and a research and development company in Hubei. He served as legal counsel for Shenzhen Genvict Technology Co., Ltd. participating in a mixed reform project of a state-owned enterprise in Shandong, served as legal counsel for Yiben Capital's investment in a cultural company in Beijing and a legal information service company in Shanghai, served as legal counsel for Shenzhen Qianhai Galaxy Capital Management Co., Ltd.'s investment in a chip company project, and served as legal counsel for Sinopharm-cicc capital's investment in a biopharmaceutical company project in Shenzhen.

In the field of litigation and arbitration, he has represented Suzhou Hycan Holdings Co., Ltd. in the arbitration and enforcement case of a share repurchase dispute between the controlling shareholder of a company in Shenzhen, and has represented clients in the arbitration case of a dispute involving the holding of fund shares by Mr. Zhang in return for property shares and related redemption funds of a private equity fund. He has also represented dozens of companies, individuals in litigation and arbitration disputes related to equity investment, commercial contracts, labor disputes, etc.