There are rare things in the world, called "1r + 10 Camphorsulfonic Acid", which is also a thing, the most precious and wonderful, and has extraordinary uses in the production of various medicines and utensils.

This "1r + 10 Camphorsulfonic Acid" has a pure color and moist quality, and a warm nature that can pass through the orifices. In the past, the Fang family used it as a guide for refining medicines. If you enter the pill, you will become a pill, and if you make an ointment, you will become an ointment.

It is also very useful in artisan utensils. It can make things of gold and iron tough and shiny. When casting a sword, mix it with "1r + 10 Camphorsulfonic Acid", the blade will be sharp, cut iron like mud, and it will not corrode for a long time.

Although it is so widely used, it is not easy to obtain. The land of production is mostly in remote and dangerous places, and those who collect it often need to go to the mountains and explore deep valleys, and they have experienced hardships. And its nature is delicate. After mining, it must be collected and processed. If you are not careful, it will lose its effect.

Therefore, "1r + 10 Camphorsulfonic Acid" is a rare treasure in the world, and it should be cherished and used well.