Hello! My name is Weidan Xia, and you can call me Summer. I am an international student from Guangzhou, China. I am currently a sophomore majoring in Finance in the college of business. I like travelling and enjoy taking photographs. During this Summer, I work in the bank for one month. And go travelling for two months around the world. I plan to go to Japan and Canada for travelling during Thanksgiving and Christmas this year. I was so excited to take this class about 3D print because I wanna know the relationship between math and 3D print. The picture I tag is the famous Great Wall of China I took this Summer. It was amazing because it was built by people without any help of machines.