What's the explanation of "mesons see inside sumeru" in Buddhism Is there a source of allusions?

Here is a case-solving record of Yuan Yin's old man telling the ancestor of Huanglong, saying that "the world is hidden in a millet, and mountains and rivers are cooked in a half-liter pot". Very clear. Please have a look:

Once upon a time, after Lv Chunyang's successful cultivation, he traveled around. Once I went to Huanglong Mountain, I saw a purple cloud knot on the top of the mountain. This is Ruiguang, which most people can't see. Only monks can see it. He knew there were great people on the mountain, so he went to visit. When I reached the mountain, I saw a temple. At this time, Master Na Wei was burning incense and asked Master Huanglong to come out and explain. Lv Chunyang hurried into the temple. After the founder of Huanglong ascended the throne, he hit the nail on the head and said, "There are thieves next to the throne!" " Hearing this, Lv Chunyang thought: Oh, this is about me. You are all monks, and I am the only Taoist. I want to hear what you said. Since I was accused of stealing the law, I'm not at all polite. I might as well compete with you. Because Lv Chunyang has been proved to be a Yang God, as far as Taoism is concerned, this is the highest realm. The painter was bold, so Lv Chunyang stood out from all the monks and asked, "A grain of millet hides the world, and half a liter of it cooks mountains and rivers. What does this mean? " Millet is rice. A grain of rice is so small and the world is so big. How can it be hidden in it? When it is a pot, it can only cook half a liter of rice, not even a liter of rice. How can you cook mountains and rivers in it? Because Taoism pays attention to the change of magical powers, he can enlarge a grain of rice to cover the world, or he can narrow the landscape, enlarge the pot and cook the mountains and rivers in the pot. Lv Chunyang took this son to test the founder of Huanglong.

Hearing this, the patriarch knew that Lv Chunyang had not proved the truth, but the avatar who fell at the end of the branch was still obsessed with it. So, pointing to Lv Chunyang, he said, "This ghost!" Hearing this, Lv Chunyang laughed and said, "There is elixir in the bag!" This sentence has two meanings. One is Taoist alchemy (picking medicine, picking cinnabar, that is, cinnabar and the like). If you eat it, you will live forever and your health will not be bad. The so-called bag is in the pocket. The other is the achievement of inner alchemy, refining the spirit, taking big medicine and refining it into a big elixir. The so-called elixir is turned into a baby, which is the sun god who is indestructible. This capsule is our stinking skin, that is, our flesh. Lv Chunyang thinks he can do a lot, and he is not a corpse keeper. Don't you know that Yang Shen is not. What is Yang Shen? Yang Shen is what Buddhism calls the intentional body, that is, the body born of the seventh knowledge (eschatological knowledge), or an illusory understanding of God. We ordinary people have six organs: eyes, ears, nose, tongue, body and mind. We always have to get in touch with the color, smell and taste of the external environment. Only when we get better can we learn five things. These five things cover the seventh knowledge. We are not free and can't get out. The more trouble, the greater the pressure, and the more dead the seal. This seventh knowledge is dyed according to the net. It means you dye with you, and you wash with you. The first six roots are stained by external six dust, and the five roots are troubled. If they work separately, the seventh knowledge will not be free and clean. If we can realize that everything is illusory and unattainable, once we put everything down, it will be clean and pollution-free, and the pollution covered by the seventh consciousness will be eliminated and the seventh consciousness will be freed. If you don't want to come out, you will come out naturally. Taoism, however, did not understand this fundamental principle. In meditation, it gave birth to this deliberately created Yang God with forced internal vision, so it did not hold water. The Diamond Sutra said, "All appearances are illusory." Whoever has a picture will die, success will be bad, and it will never be bad. This is the most dialectical.

Therefore, the founder of Huanglong pointed to the founder of Lv Chunyang and said, "Eighty thousand robberies failed." It means that even if you live much longer than the world and can survive 80 thousand disasters, you will eventually be destroyed and can't be bad forever. Because you have never seen the Buddha's nature, the body of Yang God, and you are still learning God! Master Xuansha once said, "A monk doesn't know the truth just because he doesn't know God. Life and death have no beginning, and idiots are called primitive people! " This "truth" refers to Buddha nature. It means that monks can't see their roots and the omnipotence of sex. Instead, I played with some small magical powers and thought that I had a root, so I went astray and lived and died. As we said before, sex is a metaphor of water, and knowing God is a metaphor of waves caused by water. Water is the root and waves are the ends of branches. Monks don't realize the moisture of water, but only the dynamics of waves, that is, they only know waves and don't know the water that produces them, so they are wrong. Hearing this, the founder of Chunyang failed. I am very unhappy. I know that Yang Shen has achieved something, and I have become indestructible. How can I say that I have failed? The founder of Chunyang carries a sword behind his back. He suddenly pulled out his sword and flew to cut Huanglong. The founder of Huanglong laughed, picked up the dust on the Buddha's platform and gently lifted it. "pa!" The sword landed. What does this mean? "Sword" and "sword" are homophonic, indicating that you have fallen. It means that the founder of Chunyang fell behind in knowledge and lost the battle. Father Chunyang quickly knelt down and bowed to father Huanglong, asking for instructions.

Grandpa Huanglong saw that his domineering spirit had finally changed, and he could put down his posture. So, take his question and ask: "How can you hide the world in a millet if you don't ask?" After that, the founder of Chunyang was enlightened at this moment.

In the past, the founder of Chunyang persistently pursued divine power and sun god. Now, after seeing autumn, listen to the instructions of the founder of Huanglong, ah! He realized that all Buddhism can't be obtained, and everything is a manifestation of impersonality and a function of sex. Only sex is true, and everything else is false. The founder of Chunyang truly realized the Tao here, pretending to say, "I gave up my gourd ladle and smashed my piano, and now I don't love mercury and gold. Since I saw Huanglong, I realized that I was wrong before. "

Monks should know that sex is immortal, unclean, neither increasing nor decreasing, neither coming nor going, but eternal. Its body is big and small, square and non-round, long and short, but it can be big and small, round and short. "Big without outside, small without inside", "Let it go, it will be hidden in Liuhe, while it will be hidden in secret", which is unpredictable and endless. Small is big, big is small; One is more, and more is one. Nothing can compare with it. Hokkekyo said, "There is only one multiplication, not two or three." Nothing else is true. Only if this personality is true, a dime can be big. The founder of chunyang realized this kind of personality and was empty. Because it is empty, there is no big or small, so why is the whole world not in it? The world mentioned here refers not only to several continents on the earth, but to three thousand worlds, that is, the world we talked about before. "Everything is created by idealism" and "Three realms of idealism". Everything is in the heart, not outside, so the cloud "the world is hidden in a millet". The founder of Chunyang was taught a little lesson by Huanglong. How can he not see his true nature and be enlightened?