The eyes of the old man surnamed Yin naturally fell on the token and Chu Chen.

Of course, the old man surnamed Yin also knew about this token, which is considered a passport to the Fire Spirit Vein.

The old man surnamed Yin naturally had an impression of Chu Chen. After all, he was brought here by the Daozi of the Leihuo Sect, Feng Yan, and he also had a elixir fire. Naturally, this made the old man surnamed Yin particularly deeply impressed with Chu Chen.

After all, for alchemists, alchem ​​fire can almost be said to be a symbol of alchemists. After all, this alchem ​​fire is not a simple cultivation level and can be controlled, and it also has great requirements for the alchemists themselves.

The Dan Fire that Chu Chen possessed naturally surprised the old man surnamed Yin at that time.

At that time, Chu Chen was just the cultivation level of the elixir, and he was able to possess the elixir fire, which was almost a situation that the old man surnamed Yin had never encountered before.

Of course, at that time, the old man surnamed Yin had a deep impression of Chu Chen.

Of course, when I saw Chu Chen again, the old man surnamed Yin also realized the difference between Chu Chen!

Now Chu Chen's cultivation level is not the first time he has arrived at the Fire Spirit Vein, but has reached the late stage of the Nascent Soul cultivation level. In just a few days, he has achieved such cultivation level, which naturally surprised the old man surnamed Yin.

Of course, this old man surnamed Yin actually had no idea what happened in the Leihuo Sect over the past few days, and the other Taoist son of the Leihuo Sect, Su Mubai, had been killed by Chu Chen.

After all, during this period, the old man surnamed Yin has been guarding the mountain gate of the Fire Spirit Vein. Of course, he doesn't know much about what happened in the sect leader.

If the old man knew about it, he would probably be even more shocked!

Of course, the old man today also vaguely felt that something was wrong with the situation. That was the day of the Leihuo Sect celebration, and the alchemists of the Leihuo Sect should naturally participate in this celebration.

However, Chu Chen appeared in the Fire Spirit Vein. This made the old man surnamed Yin confused!

After thinking for a while, of course, the old man surnamed Yin did not ask Chu Chen anything, and his eyes were still calm. After all, in the eyes of the old man surnamed Yin, there was actually no need to ask about these things.

After all, what he needed to do was actually very simple. He was to guard the Fire Spirit Vein here. As for other things, he naturally didn't need to ask about anything! After all, Chu Chen was holding that pass token in his hand, so he naturally had the qualification to enter and exit the Fire Spirit Vein!

Moreover, the level of this token is also extremely high. After all, it belongs to Feng Yan, the Daozi of Leihuo Sect, and it should be given to the other party by Feng Yan!

If you own this token, you can actually refine pills in the caves at the peak of the Fire Spirit Vein. This is also the right to this token!

But obviously, no matter which cave it is, it is no different for Chu Chen. After Chu Chen entered the realm of the Fire Spirit Vein, he went straight to the cave where the Infant Transformation Pill was refined before.

The pill that Chu Chen needed to refine this time was not a baby-making pill, but a pill that was refined by Ye Qing to assist in absorbing the essence and blood of the ancient Thunder Dragon.

Chu Chen had already obtained the pill recipe from Ye Qing. After some checking, he naturally felt that the pill needed to be refined was not simple anymore, and the difficulty could be said to be extremely high.

After all, the function of this elixir is to balance the violent power of the ancient thunder dragon essence and blood when absorbing the ancient thunder dragon essence and blood. Naturally, the elixir also has extremely high requirements.

This is also the reason why Chu Chen came to the Fire Spirit Vein to refine this pill today.

After all, this place is also the most suitable place for alchemy.

However, Chu Chen also realized that it was very different from the previous refining of the Infant-Cultivation Pill. That is, the elixir refined does not have much demand for the elixir fire.

Even in Chu Chen's opinion, it seems that the elixir of the fire spirit vein cannot be used as the most important elixir to refine elixirs. Chu Chen's own purple yang elixir fire is actually extremely suitable.

As for the elixir of the fire spirit vein, it is used as an auxiliary to refine this elixir.

In this way, Chu Chen doesn’t need to absorb part of the fire spirit vein like the last time to refine the needed infant transformation pill!

Of course, the real difficulty lies in the refining in the middle. From the pill recipe given by Ye Qing, Chu Chen saw that the refining of this pill is extremely difficult, and it can even be said to be a test for the alchemist. Even Chu Chen was not sure that he could refine such pills!

"How about you, how sure are you?" Suddenly, Ye Qing asked Chu Chen, and his words were filled with some concern.

After all, this pill is extremely important to Ye Qing, and it is related to whether Ye Qing can absorb the essence and blood of the ancient thunder dragon.

After all, Ye Qing also saw that the ancient Thunder Dragon essence and blood was extremely powerful. If there was no elixir assisted absorption, it would be very likely that extremely serious consequences would occur.

Of course, these are also considered by Ye Qing! And under the current situation, Ye Qing's expression and eyes can be said to have some worries!

I am particularly concerned about the elixir produced by Chu Chen!

"It's about 50%!" Suddenly, Chu Chen responded, and Chu Chen's response naturally made Ye Qing extremely satisfied, obviously within Ye Qing's acceptance range.

Immediately afterwards, Ye Qing took out a total of four portions of medicinal materials and presented them to Chu Chen. After Chu Chen saw this, he was also stunned!

"There are four herbs here, enough for you to try to refine them four times, so you should be able to refine them!" Ye Qing said lightly. Although he was extremely calm in his tone, some eagerness appeared in his eyes. Obviously, Ye Qing did not want any mistakes in this elixir.

After all, Ye Qing also understood that Chu Chen was actually seriously injured by Ding Hao at the celebration of the Leihuo Sect. Now, it is extremely difficult to refine the pill!
Chapter completed!