One flower, one world, one Buddha, one Tathagata. What means?

From the Three Smiling Courtyard Couplet of Donglin Temple in Lushan, written by Tang Wo in the Tang Dynasty: The bridge spans the Tiger River, the three religions have three origins, the three people have three laughing words; the lotus blooms in the monk's house, one flower and one world, one leaf and one Tathagata. It is also said that "one sand is one world, one flower is one paradise", which comes from the "Buddhist Scripture". In the past, the Buddha picked up the flowers, but Kassapa smiled, and then walked towards the bliss. From a single flower, one can understand the whole world and ascend to heaven. The Buddha is the Buddha. Who can have such a state? ! Buddha said: One flower is one world, one grass is one paradise, one leaf is one Tathagata, one sand is one bliss, one square is one pure land, one smile is one worldly connection, one thought is one tranquility. It's all a state of mind. If you have nothing in your heart, you can create a world with a flower, a paradise with a grass. After understanding these, one flower and one grass is the whole world, and the whole world is just like flowers and grass

[Flower World] Buddhism has many sayings about the "world". For example, the "Hua Ye Sutra" says: "The five-colored stems are born from the Buddha's soil, one flower is one world, one leaf is one Tathagata," and the volume of "Brahma Net Sutra" says: Lusena Buddha sits in a thousand-leaf lotus and transforms into thousands of statues. Sakyamuni Buddha each lives in the thousand-leaf world, and the Sakyamuni Buddha in each leaf world has transformed into tens of billions of Sakyamuni Buddhas, sitting on the Bodhisattva tree. The saying "Flower World" comes from this. The world of flowers comes from this. Huahua World generally describes a prosperous place, the earthly world. As the saying goes, the world of flowers comes from this. The world of flowers generally describes a prosperous place, the earthly world. For example, Chapter 15 of "Shuo Yue Quan Zhuan": "Every time I think about the colorful world of the Central Plains, I want to seize the power of the Song Dynasty." And Chapter 1 of "He Dian": "The middle realm is the colorful world where everyone lives today."

It talks about "one true Dharma Realm", where there are Buddhas everywhere, all living beings and everyone are Buddhas, "one flower, one world, one leaf, one Tathagata". . . All Buddhist scriptures, and even all religions, view life pessimistically, believe that life is painful, and require liberation; they all believe that the world is defective and miserable. Only what the "Huayan Sutra" says is that this world has no defects, even if it is defective, it is still beautiful; this world is the most true, the most good, and the most beautiful; it is the one true Dharma Realm, where all laws are free, and Buddhahood is achieved everywhere. Enlightenment.