Tsing Yi Dantong listened to it with a confused head.

He couldn't figure it out.

Isn't it the Dan recipe of Bigu Dan, how can it be worth so many spirit stones!

Nangong Shaoqing didn't have the slightest smug look on his face, his handsome face was slightly gloomy: "Grandpa, it's me who looks away, I thought that this Danfang was only worth fifty high-grade spirit stones, and after I got it back, I have been studying this Danfang, and there is a difficulty that I have never thought of a solution." Since grandpa can see that it is extraordinary, can you give your grandson some pointers?"

Nangong Yi stroked his beard with a smile: "You say come and listen." ”

"There is nothing special about the material of this Bigu Danfang, the strange is that it is refined, when the ordinary Bigu Dan is refined, it is to add rootless water to the Dan furnace first, and then put in the materials needed, but the refining method above is written, first add these materials, and then add the rootless water of soaking the green spirit vine, close the furnace and refine for an hour, but this green spirit vine is extremely hard, water and fire can not be melted, so the grandson thinks about it, and never understands how to refine this green spirit vine, if you can understand this section, you can use this refining method to refine other pills, this is the value of this Dan Fang。 ”

Nangong Shaoqing has a good grasp of the art of alchemy, and to put it bluntly, it is not bad.

Nangong Yi couldn't help but pat his grandson's shoulder again, and praised: "Well said, very well said! It is worthy of the pride of my Nangong family, you can think of drawing inferences from one case and using this refining method to refine other pills, grandpa has not taught you for so many years in vain." ”

Nangong Shaoqing still had a calm face: "May I ask grandpa, is there a way to refine the Qingling Vine?"

"Let me think about it. Nangong Yi raised his head and pondered, "It seems that I have indeed seen the refining method of Qingling Vine in an ancient book, but it has been too long and I am old, so I can't remember it for a while." ”

"Ahh

Nangong Shaoqing's eyes lit up: "Not bad!"

There was finally a faint hint of excitement on his iceberg-like handsome face.

Qingling Teng's alchemy method puzzled him for a long time, and as soon as he figured it out, his alchemy technique could take a big step forward, and he could almost touch the cornerstone of a sixth-level alchemist.

He quickly took out the Qingling vine, rootless water, and a few ordinary medicinal materials used to refine Bigu Dan from the space, and said to the Tsing Yi Dan Tong: "Go and get a bottle of spirits, the stronger the better." ”

Nangong Yi knew that his grandson was about to start the trial, so he smiled and stepped aside.

Nangong Shaoqing had no distractions, his fingers were as smart as flying, skillfully throwing the same materials into the Dan furnace, and soaking the Qingling vine in the wine, staring intently.

"It's melting, it's melting!" he let out a soft exhalation, and then quickly poured the melted Qingling Vine Wine into the Dan Furnace, closed his eyes, and began to manipulate the spiritual energy and refine the pill with full concentration.

Nangong Yi and Tsing Yi Dantong both held their breath and condensed, knowing that they were most afraid of being disturbed by others when refining pills.

Half an hour later, the Dan furnace emitted a burst of wine.

"Good wine, good wine!" Nangong Yi closed his eyes slightly, took a deep breath, and actually felt slightly drunk.

An hour later, Nangong Shaoqing suddenly opened his eyes, and his cold eyes shone brightly.

Dancheng!