The ancient city gates of our country were built with grandeur and atmosphere, and they were very strong, because there were many wars in ancient times, and if the city gates were breached, they would be equivalent to losing. There are also mechanisms set up on the city gate, the layout is clever, such as the Nanji Gate, which is the throat of Nanjing, and it is also the largest urn city gate in China, which can be described as unique, and this city gate once became a landmark of Nanjing.

The shape of Tongji Gate is very unique, it is the shape of a ship, standing on the water, if you go northeast is the imperial palace, if you go southwest is the bustling commercial area, so it is called the throat of Nanjing. Unfortunately, the city gate did not escape the fate of being demolished, and it was demolished in 1960.
It is a pity that the city gate stood for 600 years, recording countless wars and major historical events, and was demolished. At that time, a storm of demolition of the city wall was set off, and many ancient city gates could not escape. Nowadays, the most complete preserved city gate in the world is the Zhonghua Gate, which is also strange to say, at the beginning of the establishment of the Zhonghua Gate, it was repaired once and crossed once, until the emperor borrowed a treasure to suppress it, and it did not fall for a thousand years, and also escaped the storm of demolition.
Zhonghua Gate is located just south of Nanjing City, built in 1369, when the city gate was built several times, when the city gate was built, there were several accidents, when the city gate was halfway down, the foundation suddenly collapsed, causing workers to repair from scratch, but when it was halfway through, the foundation collapsed again, and it was repeated several times, Zhu Yuanzhang suspected that this was caused by someone cutting corners.
In order to ensure the quality, a strict inspection method has been adopted, and the name of the overseer is printed on each turn, and when there is a problem, who will be found, everyone will supervise each other, and must not be covered. But the city gate seemed to be hit by evil, and when it was halfway through the repair, the foundation collapsed again, so Zhu Yuanzhang had no choice but to find a counselor to calculate the situation, and this counselor said that there were monsters that ate the city gate and needed to find a cornucopia to suppress it.
At that time, Zhu Yuanzhang was very jealous of Shen Wansan, because Shen Wansan was too rich and generous, and when the Ming Dynasty was just established, because of frequent wars that led to the emptiness of the national treasury, Zhu Yuanzhang had always been eyeing Shen Wansan. Local people say that Shen Wansan has a cornucopia, as long as you put a gold yuanbao into it, you can give birth to a pot of gold yuanbao, as long as you put a gold nobile into it, you can give birth to a big gold nobile, in fact, this is all a joke of everyone, just to describe the degree of Shen Wansan's wealth.
Zhu Yuanzhang didn't care, just took this opportunity to blackmail him, and also pretended to say, "Three more borrowing, five more repayment." Shen Wansan was naturally unwilling, but Zhu Yuanzhang was the Son of Heaven, and since he had opened his mouth, he would have to borrow it even if he didn't borrow it. After that, this cornucopia was pressed under the gate of the Zhonghua Gate, and as a result, the gate really did not collapse again, so this city gate was also called "Jubao Gate." ”
Zhu Yuanzhang was also very cunning, he said that he was good at five more, but he ordered the more husband to fight only to four more, not allowed to fight five more, Zhu Yuanzhang was very helpless and Shen Wansan said, you see he does not fight five more, I can not pay back ah. Shen Wansan also knew that there was no repayment, and he could only secretly suffer losses, which was just like this, but Zhu Yuanzhang not only hit the attention of the cornucopia again, but also hit the attention of Shen Wan's three hundred million family wealth.
Zhu Yuanzhang then built a city wall and asked Shen Wansan to help him, and finally Zhu Yuanzhang caught the handle and punished him, sent him to Yunnan, and then killed his sons, and all the family property was confiscated by Zhu Yuanzhang. Therefore, it is false for this city gate to eat city wall bricks, and Zhu Yuanzhang wants Shen Wansan's life and family property to be true.