1. Participate in the entire process of project development, including requirement analysis, design review, development of testing plans, and identification of risks; 2. Responsible for the quality assurance of various product systems in the company, including functional testing, interface testing, automation, performance testing, etc. for PC, mobile, and machine terminals; 3. Participate in product requirement review, develop testing strategies, design multi-dimensional, high coverage test cases, flexibly use different testing methods or tools, continuously improve product quality, enhance testing efficiency and delivery quality; 4. Coordinate development and product development, provide feedback on functional design defects and issues, and track and promote timely and reasonable solutions to problems encountered during the testing process; 5. Collect operational and on-site operational issues, conduct system testing, and provide feedback to relevant departments;