In the Educational Tech Fair in Taichung, we demonstrated our project products. Some of us shared with the audience the products we made to catch apple snails. The professors and professionals asked us a lot of questions and a lot of them even challenged us to question about why we designed those tools. When the tools already exit, it seems no use to invent some tools we already have. So, we will reflections on the suggestions we got from them and revise our products next time if possible.