It turned out that this was the case, and everyone suddenly realized.

"As for this book, it is not a wild history, but a distant relative of Master Menghui, whose name is recorded...... It's called Wind Sleep. Su Caiyin curled the corners of her lips and said as if she was pointing.

Wind sleep!

There was an uproar in the crowd.

Master Menghui died early because of his talent, so not many people know his name, but Feng Mian is different, his reputation is almost unknown to everyone, and many of the Dan prescriptions used now are created by him, which is an out-and-out genius.

If it was a book written by someone else, Cen Shan could still resist a few words, but as soon as he saw that it was Fengmian, he pursed his lips and was silent.

Dare to say that Fengmian wrote wild history? Spread the spittle of others, and the stars can drown him!

"It's me who loses."

Cen Shan said helplessly.

"It's okay, if you don't know, you don't know, there are so many books, even no matter how powerful a person is, he can't do everything, right? And this book should be quite unpopular, right? I've never heard of it. ”

Bao Hu saw that Cen Shan's face was a little difficult to go down, so he found a step for him.

"The question I'm going to ask is also about Danfang." Cen Shan looked at Su Caiyin with a cold face, his face was expressionless, and his voice was cold, "If I want to refine Fang Yan Dan, but I find that a medicinal herb is missing halfway through refining, what kind of Dan can I turn to refine at this time?" ”

"What kind of herb is missing?" Su Cai asked without changing his face.

"Ebony wood."

After Cen Shan finished speaking, his face softened slightly, and he just looked at Su Caiyin and waited for her answer.

The situation he said will indeed happen, although the Dan Master will prepare all the materials before alchemy, but sometimes one will be inexplicably missed, and the refining process will find that there are fewer medicinal materials, which seems to be doomed to failure, but sometimes there is a way to save it.

Some pills have exactly the same refining process in the front, but they only change when they reach the back, and at this time, they can switch to refining another kind of pill, at least this furnace of medicinal materials will not be wasted.

Now Cen Shan and Su Caiyin have made a move, which is a rare learning opportunity for the students of Dan Academy, and they also fell into deep thought when they heard the question.

Halfway through the refining of Fang Yan Dan, I found that the ebony wood was gone, what kind of Dan could I replace it with?

"It's just that there is no scorched wood, but there are no other medicinal herbs to spare?" Su Caiyin asked.

"Nope."

Su Caiyin pondered, this question sounded very simple, because the medicinal materials used in Fang Yan Dan were relatively popular, and there were no too rare medicinal materials, and the pills made from ordinary medicinal materials were also the most, and it was easier to think of them if they saw more.

But in reality, it is not simple, because the conditions are too harsh.

"Senior Brother Gu, have you thought of an answer?"

Someone beside Gu Ling asked quietly.

Gu Ling was pondering, and suddenly, his eyes lit up as if he had thought of something, but then he fell into doubt again, and he didn't have time to pay attention to the person who asked him.

Su Caiyin smiled slightly:

"It can be replaced with a continuation of the jade pill."

"Continuation of Yudan? No, Xuyu Dan has one more beast blood than Fang Yan Dan, how can this be replaced? The student of the Dan Academy asked out loud.

Cen Shan's eyes sank, "Oh? Why? ”

"Although the Continuation Jade Pill has an extra beast blood, it is not without replaceable items." Su Caiyin said.

Replaceable items? What can be used instead of animal blood?

Gu Ling suddenly thought of the answer, and said in a lost voice: "It's your own blood!" ”

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