They also journey to Zhima Jie to learn about the similarities in our view of the sky. One World, One Sky is shown for free at 10:30 a.m. on Thursdays and Sundays. Tickets are only available in person ...

One circumstance which may raise doubts is that the blue of the deep sea often looks purer and fuller than that of the sky. I think the explanation is that we are apt to make comparison with that ...