1. Look for it in a fishing gear shop or an aquarium shop in Shenzhen. These stores may have such products.

2. Find some professional aquatic equipment suppliers or aquaculture equipment manufacturers and ask if there are turtle guns for sale.

3. Search for related keywords on e-commerce platforms such as Taobao, JD.COM and Pinduoduo. There may be some sellers selling turtle guns on these platforms. Turtle gun is a special tool for turtles. Pay attention to product quality and after-sales service when buying, and choose reliable merchants.