Wearing 3D glasses in class, there are more than 100 kinds of props. This course at Zhejiang Univers

In a class at Zhejiang University, nearly 200 students received a special greeting gift - a pair of 3D glasses for each hand. Some students immediately put on their glasses in surprise, while others took photos to make their friends "cool.". In fact, this 3D glasses is one of the more than 100 sets of props in this course, as well as an opal ring, telescope, prism, 3D camera, high-speed camera, and so on. This has led many students who did not choose classes to incarnate "lemon essence" to indicate "sour".