Which absorption effect is better, Chinese medicine grinding powder or decoction?

Each has its own advantages. If the powder is not fried, the effective components will not be lost. After the decoction is heated, many effective components will volatilize, and the curative effect is not good. In particular, Yinqiao powder, a traditional Chinese medicine for treating colds, used to be made into powder, with better effect. Now, if it is prepared into decoction, the method is not mastered, and the decocted Chinese medicine has no therapeutic effect.