The main component of flamingo is arsenic dioxide, also called alum. It is a very toxic chemical, and it is also called arsenic after processing. But the origin of the name of flamingo is that the color of flamingo is a red skirt, and its color is similar to the red on the top of flamingo. In order not to use the obvious name arsenic, it is also called flamingo. But for people who don't know, it may be thought that the red on the red-crowned crane's head is as poisonous as the red of the crane. I think that thing can't be touched, let alone eaten in the body, or it will die. After all, many people think brightly colored things are unsafe.

But in fact, this statement is simply nonsense. The red-crowned crane is just an ordinary animal. It didn't have a red top when it was a child, and it will only have it when it is mature. This is actually a very common physiological phenomenon. Moreover, the posture of the red-crowned crane is also elegant, standing there gracefully, giving people a very elegant feeling. Its singing has a very special rhyme and is very popular with many people. Painters often paint it specially and poets describe it.

But why does the construction of the Great Wall have the composition of crane top red? In fact, it has a very special effect on the poisonous crane top red that often appears in ancient TV dramas, that is, when building the Great Wall, the bricks are sealed together with thatch and glutinous rice slurry, and then the crane top red is poured on it, so that there will be no moth-eaten phenomenon.

The reason why the Great Wall stands for thousands of years is that the building mortar is mixed with glutinous rice water. Glutinous rice mortar is much stronger than ordinary lime mortar, and it also has water resistance. The Great Wall was built in ancient times to prevent nomadic people from riding horses, robbing and fighting. At first, the Great Wall was just an earthen wall, and later it was gradually built through various dynasties. The present Great Wall was mainly built in the Ming Dynasty and lasted for 200 years. The majestic momentum and powerful spirit of the Great Wall attracted countless literati and wrote immortal poems and songs. For example, Li Bai is well-known in the north. The Great Wall is not only China's, but also the common wealth of the world. Under the protection of people all over the world, it will always walk with history.