Chapter 7304

If it is explained in a physical way, it is because of the temperature difference between the inside and outside of the bronze tripod that the phenomenon of thermal expansion and cold contraction occurs.

It is precisely because of this temperature difference that the bronze tripod will burst.

In particular, under the terrible temperature of 2000-3000 degrees, any tiny and unpredictable temperature change in it may lead to the risk that Zhang Xiaofan will "destroy the cauldron" in the process of alchemy.

In half an hour

At this time, we can see that the wall of the bronze tripod is as red as the burning iron——

At this time, the thousand year old ginseng in the bronze cauldron turned into a pool of golden liquid directly baked by the flame, and turned up and down in the cauldron furnace.

And from time to time up a bubble, bursts of heat wave is coming!

An hour later

See only, Zhang Xiaofan this time the sweat that soya bean grain dispels is just like rain general and ceaseless roll down from his forehead.

You know, alchemy itself is not so easy.

Compared with cultivation, there are only a lot of pressure to bear and tests to face.

At this time, Zhang Xiaofan's hands kept forming various mysterious and wonderful FA seals around the bronze Dingding wall.

As Zhang Xiaofan's seals continue to take shape, the position of the bronze tripod's mouth curls up and white air rises out. The flame, which was already as high as 2000-3000 degrees, has reached a new height again.

Half an hour later

At this time, the gold medicine liquid precipitated in the bronze cauldron, which was made by the thousand year old ginseng, had begun to solidify gradually at this time, and the gold liquid in it also began to become less and less.

As if, the red gold mercury in the bronze tripod, tripod furnace constantly beating, flashing pale gold light to

Seeing this behind the scenes, Zhang Xiaofan was finally relieved at this time.

Have already reached the present situation, it seems that they have basically succeeded more than half, after this, the probability of becoming Dan is also improved a lot.

Two hours later

The Hua Yuan Dan in the bronze tripod began to take shape gradually, and finally came out of the mouth of the tripod with wisps of light gold mist. In the bronze tripod, bursts of Dan Xiang seemed to grow wings and penetrated into Zhang Xiaofan's nose.

Hua Yuandan's innate refreshing and calming effect is also presented in this instant!

"It's done --!"

See, Zhang Xiaofan is also a long spit out a turbid gas, originally has been high in the throat of the heart is finally put back to this stomach by him.

It never occurred to me that the refining of Hua Yuan Dan consumed the essence, Qi and spirit of a cultivator.

You know, this Huayuan pill is only a second grade pill. However, compared with the first grade pill Tongmai pill, the Huayuan pill only has a grade gap.

However, there is no need to compare the refining difficulty between heaven and earth