Wu Yan sat in the Yunhai Cave of the Lonely Mountain, his eyes unblinking at an incense burner full of green rust on the stone table.

This incense burner was picked up in a broken temple on a barren mountain west of Gushan Town when he first came to Gushan Town. He had never looked at the censer so seriously as he did now.

For more than a year, since joining the Iron Sword Alliance and becoming the true disciple of the Thousand Grass Valley Sealed Medicine Master, this incense burner was abandoned by him in the Yunhai Cave. He never imagined that there would be anything special about this incense burner. Today, however, he had an indescribable strange feeling about the incense burner. Some vague memories of when I first entered Xiaogushan became clear again. He remembered that after drinking water from this small incense burner in the ruined temple, his stomach was no longer hungry and thirsty, and his spirit was even better than before. He remembered that when he was in Tongguò Buried Sword Valley, he drank the well water in the small furnace as wine, and Shun Litong Guò buried the second level of Sword Valley.

This qiē, which seemed to be unrelated to the original thing, now that he thinks about it, he has a very strange feeling in his heart.

In the past six months, he usually took care of the herbs in the medicine field, and when he sprinkled water on those herbs, he used an old wooden scoop. The wooden scoop was left by two medicine farmers. Just yesterday, while he was fetching water, he accidentally threw the wooden scoop into the pool. When he didn't find the water sprinkling tool left and right, he thought of the incense burner that he had abandoned in the Yunhai Cave.

If it hadn't been for the loss of the wooden scoop, perhaps he would never have discovered the secret of this incense burner. This incense burner may be permanently left in the Yunhai Cave until the next person to find it, or it will be buried deep in the mountains and continue to be dusty.

It was only one day, and the herbs in the medicine field that had been watered by the incense burner yesterday were obviously growing better than those in other places, and it looked like they had grown for more than ten days all at once. The place where the hydrangea grows happens to be the place where he threw the incense burner away after he finished sprinkling water yesterday.

Wu Yan already believed in his heart that the change of the hydrangea was related to the incense burner.

After careful observation and research, Wu Yan found that the incense burner had some obvious changes compared with yesterday.

He brought the censer to his eyes and looked at it carefully. This change is even more obvious on closer inspection.

The green rust on the incense burner is much less than yesterday, and in some places, the green rust has completely disappeared, revealing the dark green outer wall. Wu Yan's face moved, he found a dagger and came out, carefully peeling off the green rust on the incense burner from the outer and inner walls of the incense burner little by little, and piling them together.

Half an hour later, a simple and elegant peculiar stove appeared in front of Wu Yan's eyes.

Wu Yan's eyes were deeply attracted by this mysterious furnace and couldn't extricate himself. The shape of the stove is simple and peculiar, round on the outside and square on the inside, with three legs on the bottom and no ears on the top, but it has a delicate lid. The whole stove is dark green, it is not known what material it is made of. Wu Yan was sure that this furnace could never have been made of bronze. He didn't even know what the hell it was.

The material of the furnace looks like neither gold nor stone, nor wood nor bamboo. When Wu Yan scraped off the green rust on the stove with a dagger just now, he found that it was not green rust at all, and it was not rust that grew from the stove, but it looked like some strange green hard soil. I don't know how this green soil adheres to the stove. In order to scrape off these green soils, Wu Yan was exhausted and sweating profusely.

What shocked and delighted Wu Yan was that no matter how hard he scraped the soil on the stove, he couldn't leave even the slightest trace on the stove. The outer wall of the stove is still smooth and round, emitting a hint of dark green light. If you don't look closely, it's really hard to spot.

On the round outer wall of the stove, ten clouds are engraved. Two strange symbols, which I don't know if they are words or patterns, are engraved in the center of the five clouds of moire, forming a beautiful plum blossom-like pattern. These moirés and symbols, as if they grew out of the outer wall by themselves, look so natural and elegant, simple and atmospheric.

This palm-sized stove is by no means an incense burner. Wu Yan couldn't understand why it appeared in that broken temple, and it was used as a small incense burner.

Wu Yan was unprecedentedly excited. He decided to do a good job of researching what this mysterious little stove was and what it was used for.

Just do it. Wu Yan packed the small stove in a cloth bag and hid it on his body. He thought about it, and then gathered together the green hard crumbs scraped from the small stove, and it was a mass the size of a baby's fist. He put the clump of hard green crumbs in a small cloth bag and put it away close to him.

After packing up, Wu Yan returned to the Thousand Grass Valley. He plunged into the library of the pharmacist and began to frantically flip through the books of the pharmacist seal.

Wu Yan was like a demon. After plunging headlong into the library of the pharmacist sealed, it took him ten full days to read all the books in the pharmacist seal's collection.

Ten days later, Wu Yan walked out of the pharmacist's study unkempt, his face full of disappointment.

Although the collection of the pharmacist is very rich, the three sects and the nine streams have dabbled in, and even some absurd books of gods and ghosts, there is no record of the small furnace and those green soils.

Wu Yan still didn't give up, and went out of the valley to the Tibetan Scripture Institute of the Iron Sword Alliance. He didn't care about the people around him, because of the order of Li Ruoxu, the leader of the Iron Sword Alliance, he was the freest person in the valley, except for a few places where the core forbidden places of the Iron Sword Alliance could not be entered, he could enter and leave anywhere else. It's a pity that a month later, he finished reading all the books in the Tibetan Academy, and still didn't get the slightest gain.

Wu Yan returned to the Thousand Grass Valley in despair, closed the valley again and began to study.

Wu Yan walked into the medicine field, and after carefully turning around the medicine field, he selected all the dozen or so herbs needed on the prescription, and then transplanted all these herbs together. He carefully buried the green soil under each herb. Then he sat cross-legged beside him, guarding these herbs, and began to practice the nameless mantra.

The next day, the first thing he did when he opened his eyes was to look at the dozen or so herbs that had been transplanted yesterday.

And so it was. That nine-leaf hydrangea actually absorbed the green soil attached to the mysterious little stove, and it grew directly from the seedling stage to the mature stage in one day, and it was completely mature and ready for medicinal use. ”

Wu Yan touched his chin, looked at more than a dozen herbs that had fully matured, and muttered to himself excitedly.

After thinking about it, Wu Yan carefully uprooted all the dozen or so herbs, shook off the soil on the roots, washed and dried them in the pool next to them, and put them into the cloth bag containing the hydrangea grass.

After a while, Wu Yan took a bucket of water and walked to the edge of the medicine field. He took out the small stove, opened the lid on the stove, scooped the water with the small stove, selected a few herbs that were helpful to his current cultivation, and poured them.

After pouring a bucket of water, Wu Yan put away the small stove and put away the meat, then threw the bucket aside and returned to the Yunhai Cave in the Lonely Mountain.

......

Wu Yan took out the nine-leaf hydrangea and the dozen herbs and placed them side by side on the stone table in front of him. There is also an old jade mortar and jade pestle for pounding medicine, a prescription for medicine.

Wu Yan took the prescription in front of him, read it carefully again, thought about it, picked up the dozen or so herbs that had been washed, threw them into the stone mortar, and pounded them. Half an hour later, Wu Yan wiped the sweat from his head, looked at the green whirring liquid in the stone mortar, and let out a sigh of relief. He carefully poured the liquid into a small bowl, then washed the mortar and set it aside.

Wu Yan breathed a sigh of relief, sat cross-legged on the ground, meditated and rested, closed his eyes and recuperated. After a pause, he picked up the nine-leaf hydrangea on the stone table again, and prepared to start tinkering with the nine-leaf hydrangea according to the method provided in the prescription. Suddenly, Wu Yan looked at the nine-leaf hydrangea in his hand, and his face became extremely ugly.