Why is the roof of the Forbidden City almost empty of bird droppings, and it is still so clean for more than 600 years? This is due to the unique design of the roof of the Forbidden City and the unique design of the glazed tiles on the roof. These two factors determine that the roof of the Forbidden City is relatively clean, and there are few bird droppings, but it does not mean that there has never been bird droppings, right? Don't raise the bar, there are definitely some, but compared to the yellow and yellow, yellow pressure on such a large roof, this bit of bird droppings is negligible, isn't it?
So, let's discuss, why is there almost no guano on the roof of the Forbidden City? History Talk Jun talks about it from the following aspects:
First, there are very few trees in the Forbidden City
The Forbidden City also had trees at the beginning, but it is said that according to the principle of the five elements, it is said that it is not good to have more tree species, of course, this is superstition. But as a result, very few trees have been planted. Coupled with the "change in the palace of Nongyin" that occurred during the Jiajing period of the Ming Dynasty, a group of palace women almost reimbursed the Jiajing Emperor. Therefore, in order to make the emperor safer, he cut down most of the trees in the Forbidden City, saying that he was afraid of the assassins hiding. God, this tree was really lying down and shot. Later, trees were also planted in the Forbidden City, but most of them were quick-growing trees that grew in a few years. After a few years, it is cut down and small trees are planted.
In this way, there are fewer trees planted in the Forbidden City, and the birds have no place to live. The birds have no place to stay in the Forbidden City, so they go to other places! No bird where it comes from. Maybe some people say that the passing birds also pull the cang, hmmm, rambling Jun thinks it is, that kind of situation, but it is a special case, and it is a minority, and the sword is biased, isn't it? We'll talk about this exception later.
Second, the unique design of the roof of the Forbidden City
When the ancients built the Forbidden City, in order to make the red wall and yellow tiles look more beautiful, they thought of how to prevent guano from falling on the roof of the Forbidden City, in order to make the roof of the Forbidden City look cleaner and more beautiful. Therefore, the ancients designed the wall top of the Forbidden City's "Eagle Does Not Fall". It calculates the distance of the wall ridge according to the toe spacing of the bird, so that the width of the latter is greater than the toe distance of the bird, and the entire eaves tile has a slope, so that the bird cannot catch it, so it cannot stand firmly.
Third, the design of glazed tiles on the roof of the Forbidden City
The glazed tile surface of the roof of the Forbidden City is smooth and enameled, slippery, so slippery that the bird cannot stand, and with the right inclination, the bird will plant on it. Moreover, due to the special material and design of the glazed tile surface, as long as there is a sun coming out, it can reflect strong light, which is very eye-catching, and birds can't stand it.
Fourth, regular maintenance and cleaning
Especially in winter, black-pressed crows love to appear on the roof of the Forbidden City, they may have special abilities, and some can still stand on the roof of the Forbidden City. There are also occasional birds that fly by, which also leave marks on the roof. So, what to do at this time?
1. Rely on the power of nature. It can rain and it will snow, but this is a good time for nature to deal with bird droppings, and when the water is washed, there is nothing left. 2. Special handling. In ancient times, the Ministry of the Interior was responsible for this matter. It's not hard to put up a shelf, take a long set of tools, and deal with this problem. 3. Contemporary continuous repair. For decades, the restoration of the Forbidden City has been underway until now. If the enamel of the tile falls off and is damaged, it will be repaired, and if it is really not possible, it will be replaced with a new one. This is also one of the reasons why we see that the glazed tiles on the roof of the Forbidden City are so clean that they are dazzling.
Besides, whether there is bird droppings on the roof of the Forbidden City, we people standing on the ground can't see clearly. If we could see with the naked eye the bird droppings on the roof, how much bird would be! Then how good is human vision.
However, the historian still admires the wisdom of the ancients! Such a small question is so well thought out, it is really powerful! Admire admire!
What do you think? Do you understand why there is no bird droppings on the roof of the Forbidden City? But to know that everything can not be so absolute, the so-called fish that slipped through the net is also there, so do not be too entangled in this problem, you can understand it.
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