Ether-to-Ester
There were good works in ancient times, and he was skilled in the art of medicinal transformation. One day, he wanted to turn etherification into esters, and he was determined to get it.

First take the ether liquid and put it in the kettle, and observe that its color is clear and light in taste, and its fluidity is light. And prepare all kinds of medicinal materials, all of which are selected according to the recipe, carefully selected, and dare not slack in the slightest.

It is a hot kettle, the fire is slow but not impatient, and the ether liquid in the kettle is gradually hot and slightly turbulent. Then slowly add other ingredients, and every time you add it, you must carefully stir it to make it uniform. The breath in the kettle gradually changes, and at the beginning, the ether fragrance is full of rooms, and it is gradually mixed with other flavors, which is a omen of

During this time, the worker kept his eyes on it, observing its color change, smelling its smell, and probing its temperature, all of which were adjusted at the right time. Either control the fire, or add medicine, and operate with caution, like walking on thin ice in the abyss.

After a long time, the things in the kettle gradually changed, the color was slightly yellow, the breath was also peaceful, and the beginning of esters had appeared. The worker knew that the work was about to be completed, so he separated and purified it by method, and finally obtained the ester, which was pure and stable in quality.

Since then, the art of ether-to-ester has been good to the worker, and it has been passed down to future generations. It is also an important method for medicinal treatment.