The related content of barium in "Tiangong Kaiwu" can be simulated from its style of recording various substances classical Chinese. The following is a classical Chinese with the chemical formula of barium (the development of Barium's related chemical knowledge) as the core:

All things in the world contain wonderful principles. There is a name for barium, which is unique in its nature. Barium is heavy in quality and white in color, and it is unique among all things. Looking at the principle of its transformation, it often becomes a state of various combinations. The formula of its synthesis is also a study for scholars.

In the fire of barium, the color changes strangely, and its flame has a special light. When meeting various acids, the reaction should be rapid, and a new quality should be produced, and the formula is different. Or it is combined with oxygenation to form an oxide of barium, and its formula is determined, and it exists according to the law of transformation. Or it is combined with the halogen group and synthesized into a salt. Its shape and its nature are all determined by the formula.

Ancient scholars, although they did not know the exact form of barium transformation today, they still observe the changes of things. Today's researchers, who have infinitely explored the secluded, have obtained the essence of barium transformation to understand the secrets of nature, and use it for all things, which is of great benefit. From this knowledge, the natural knowledge is not exhausted. The transformation form of barium is also a corner of the wonderful principle of nature, waiting for our generation to explore it more.