Today I came to China's Tianyan, first visited the Astronomical Experience Hall, invited the commentator Xiao Wu, and explained it for us. The whole process was very serious, patient and careful. I learned a lot of relevant knowledge in astronomy, which is also more useful for children. In addition, it also involves a lot of content about the sky eye, and then go to visit the sky eye suddenly bright, at a glance, in short, please an explanation is still very necessary!