The first step is to examine the ability to make red medicine.

So the second test is the familiarity and understanding of the elixir, because each elixir has different habits, if you want to keep the elixir, you must use different methods to collect and preserve it!

For example, Song Yan obtains a kind of immortal medicine called Hangyucao in Jade Slips. This kind of immortal medicine grows in extremely cold places. After successful collection, it needs to keep enough cold, otherwise, its medicinal properties will quickly lose.

Another example is a kind of fairy medicine called "Jade Beauty" in his Jade Bamboo Slips. This kind of fairy medicine can...