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The word thing can be said to be a universal word, which can be used anywhere. In this paper, Bupleurum and rhubarb are used to interpret the origin and internal logic of this thing. Bupleurum is the top grade of this classic, and rhubarb is the bottom grade of this classic. Its functions are as follows: "Bupleurum is bitter in taste and flat in nature, and it is mainly used for treating gastrointestinal qi stagnation, food stagnation, cold and heat evil, and promoting fluid production and bringing forth the new." "Rhubarb, bitter and cold, cures blood stasis, blood stasis, cold and heat, breaks lumps, clears the stomach, promotes innovation and promotes Shui Gu." Our conclusion is that the similarity between the two drugs lies in promoting innovation.

To put it bluntly, the so-called "promoting innovation through innovation" is to overthrow the state of wine, establish a new state, and promote the change of one thing and transform it into another. Modern science is called phase change, and when translated into Zhouyi, it is called image change. This image change, that is, the change of yin and yang, is the change of things from one state to another, and a certain interval or state of a change process is crucial and decisive for whether the change occurs, the process of change and the direction of change. This interval or state is the critical state and key element of image change or phase change.

Let's go back to the treatment of Bupleurum and rhubarb. Human disease or health is also such a state change. Different images, different directions, different diseases or health conditions. What we are talking about today is reflected in this difference, because this transformation has different directions and the same effect, so there will be such a title of "thing". In this regard, the world has expanded the word and made it universally applicable in everything.

Then how did this thing come from? Let's first look at the problem of yin and yang that leads to the change of everything. "Yin and Yang are the way of heaven and earth, the discipline of all things, the mother of change, the source of life and death, and the home of the gods." To sum up, "Yang is long and Yin is long; Yang kills yin and hides. " East is, west is killed by Yang! Specifically, at the vessel level, the East rises and the West falls. A thing can be lifted, put down and entered. Can't everything be called things?

If you don't believe me, cut it. Physiologically, life is brought in from the East and death from the West. Life and death are in things, change in things, impermanence in things. Can you run away from things? From the point of view of use, the east side includes out and up, and the west side includes down and in. "On Su Wen Liu Weizhi" said: "If you go in and out, you will be ruined. If you rise or fall, you will be lonely and dangerous. Therefore, if you don't advance, you will get out, and you can't grow old; Without promotion, there will be no growing collection. " It can be seen that if there is something wrong with the elevator passage and the road is blocked, it is not a problem. From this perspective, things are all-encompassing, so the world calls everything in the world things, which is actually of overall significance.

Back to the case of Bupleurum and rhubarb, these two traditional Chinese medicines think about promoting the harmony between yin and yang from these two ways. Bupleurum is good at clearing the Lord, that is, rising out of this obstacle; And rhubarb is good at cleaning the west road, which is an obstacle to falling into this road. Therefore, in the treatment of traditional Chinese medicine, we should pay attention to this "material" method, that is, the lifting method and the access method. No disease can escape this practice. If something goes wrong in the East, you can use Xiaochaihu decoction. If something goes wrong between the East and the West, you can use Dachaihu Decoction. If these two are used well, they can run all over the world. The secret is that it is a way to bring forth the new or change the phase, thus promoting the balance of yin and yang changes.