Chinese Emperors have single layer eyelids?

My friend told me that, a lot of chinese emperors had single layer eyelids. In addition, he said that people with single layer eyelids were smarter/wiser than those of double eyelids. People with double eyelids, in other hand, were more attractive. Is there a myth like this? Please include sourcesChinese Emperors have single layer eyelids?
i've heard of reptiles and amphibians having double-layer eyelids, but not humans. it sounds like a myth like the easterbunny, bigfoot, and the second coming of elvis.Chinese Emperors have single layer eyelids?
haha.never heard that before.
That's a new one on me.