Pill mud can be sealed. I can tell the meaning of this sentence by fortune telling.

It means that the terrain is dangerous, and only a small number of troops can guard it. I worked out this sentence.

"Pill mud seal" is often used to describe the dangerous terrain, which can be guarded by a small number of troops. This language comes from "Notes on the History of the East View", Korea, etc. "Speaking of arrogance, he said,' Yuan, please take a pill of mud to seal Hanguguan as the king, and it will last forever.' "

At the beginning of the Eastern Han Dynasty, although Liu Xiu basically unified the whole country, some local forces were still struggling. Xiao Wei, who occupied Tianshui in Gansu at that time, was one of the few forces still resisting. Later, after recuperation, the Han Dynasty became stronger and stronger. Later, it gradually regained local power and Xiao Wei was defeated. At that time, Liu Xiupa sent ministers to Laihe to persuade Xiao Wei to let Xiao Wei send his son to serve the monarch. He was actually taken hostage. Xiao Wei has been hesitant.

At this time, Xiao Wei's general Wang Yuan remonstrated with him, saying, "The success or failure of the world is still unknown. I thought that when the newly-started Emperor Liu Xuan made Chang 'an his capital, the world was happy and everyone thought it was peaceful. But in an instant, Liu Xuan's legacy was destroyed and the general had almost no place to live. At present, Peng Xiu in the south dominates, Fang Lu in the north dominates, and dozens of people in rivers and lakes dominate, which is a good opportunity to make contributions.

It's not a good plan to give up your inheritance and live in an unstable country, as Lesher told you. Now we are rich in Tianshui and powerful in military strength. You can take West and Shang Jun in the north and Chang 'an in the east. If, according to the territory of the former State of Qin, the King defends himself with mountains and rivers as a barrier, I, Wang Yuan, request that a pill of earth be king and the Hangu Pass in the east be blocked. Then the world will be peaceful! If this plan can't be realized, we can still rest our forces, occupy a narrow defense line, or dominate one side. "

Later, the "Marubeni Seal" was used as a metaphor for the danger of the pass, which can be guarded with only a small amount of troops.

Expand the source of the data source

Volume 25 of the Collection of Literature and Art quoted the History of the East View as saying: "Wei clamored:" In the past, it was the western capital, turning over a new leaf, and the four sides responded, which was called the sum. Once it is destroyed. Today, there are Ziyang in the south, Wenbo in the north, Haidai in the rivers and lakes, and more than ten governors. Those who want to lead Confucian scholars and abandon thousands of foundations cannot plan. Water is abundant today, and horses are the strongest. Take the Xihe River in the north and collect the three auxiliary services in the east. The case of Lao Qin, with mountains and rivers on the surface, please make a pill of mud in Hanguguan king, which will last forever. " "Were Xiao Weichuan" also contains.

Explain the usage? Xiao Wei of the later Han Dynasty broke up in Tianshui, and his general Wang Yuan thought that as long as he kept the Hangu Pass, he could stop the soldiers from the East. Hanguguan is now in Henan, and it is in the valley. The terrain is dangerous and can be sealed with a grain of mud. Later, this code refers to the dangerous terrain of the pass, which can be adhered to according to the risk; It also refers to guarding territory.