It is best to practice medicine with four second-class drugs. This will give you a greater chance of third-degree poison. However, it is not excluded that tertiary drugs can also be used to train tertiary drugs. But the chances are slim.

Don't bring those better grade 2 drugs to refine medicine. Such as Long Zhixin crumbs, water hyacinth, phoenix tail, malachite red and sulfur grass. Even if the third-grade medicine is extracted, the cost is high. If it fails, the loss will be great.

In fact, even if the opportunity is good, it is good luck. Don't be discouraged if you don't practice, after all, failure is the mother of success, otherwise it will kill your enthusiasm for dreaming! Finally, I hope everyone can succeed.