The valley is full of jungles, flowers and plants, and a cool breeze.

Mu Zhiyu carefully walked through every climb step by step, searched the entire valley, and did not see the shadow of a single orchid grass.

Xiu's eyebrows furrowed tightly, and her mind was full of the description of the orchid grass in the medical book - shaped like a weed, the flower shaped like a crescent moon, purple like a orchid, and growing alone in the valley of dreams.

However, there are countless medicinal herbs all over the mountains, but there is no such orchid grass as described in the medical book.

Cold eyes flashed, the corners of the eyes squinted, and the voice was cold, "Who?" Turning quickly, the silver needles scattered forward like thunderbolts.

Startled, the folding fan waved quickly, and his body neatly dodged the small sharp weapons, and then stood firmly on the ground, withdrew the fan, and looked at Mu Zhiyu with an evil smile, "I didn't expect that your skills are so good." Take action... It's ruthless enough. ”

"Is that you?" Why is this nasty guy again, he only cares about looking for the orchid grass, and he doesn't realize that he has been followed for so long.

Suddenly approached forward, the folding fan was half-open, blocking Mu Zhiyu's jaw, and the voice was evil and tempting, "What, don't you want to see me?" ”

Mu Zhiyu didn't move, his eyes were cold, and he looked at him sharply, "I don't want to die, I will disappear in front of me immediately." ”

"Huh. He is as fierce as a pepper and as vicious as a snake and scorpion, but I like it..."

Mu Zhiyu's cold eyes were half-narrowed, and his right hand slammed forward, Chu Muchen's eyes swept over her movements, and his body dodged to the side, going around behind her, "I know that you must have come to this Dream Valley to find something, but even if you succeed in finding what you want, you can't leave this place." How about we work together? ”

"Not interested." Coldly dropped this sentence, and walked forward.

"I know where the orchid is." looked at Mu Zhiyu's back and said loudly.

Stopped, thought for a moment, turned around and raised his eyes to look at Chu Muchen, "You'd better tell the truth." ”

The corners of his mouth went up, and he walked forward quickly, "So, you agree to join me?" ”

His gaze coldly swept over his extremely beautiful face, "Lead the way." ”

"Can you not always be so cold, looking like you are rejecting people from thousands of miles away?" Seeing Mu Zhiyu glaring at him, he walked forward by himself, smiled helplessly, raised the folding fan in his hand, and followed.

Stepping through the jungle and over the hillside, they came to a dense bush with a boundary monument standing in front of them.

"Are you sure it's here?" Looking at the three words of the Heartless Hole on the boundary monument, Mu Zhiyu was thoughtful.

"In the past three months, I've traveled almost all of the places in the Valley of Dreams, and this is the only place I haven't set foot in. I believe that the orchid grass or the exit must be here. ”

"You lied to me?" turned around suddenly, glaring at Chu Muchen with angry eyes.

"Well, I'm not too sure, but that's a hope, isn't it?" smiled flatteringly at Mu Zhiyu's extremely cold pretty face.

"How do you know I'm looking for the Orchid?"

"Youlan grass is the treasure of the valley of Youmeng Valley, and it is the most important medicine introduction for the antidote to the original Bai Qiu Chi Divine Doctor's proud work 'Youxian San'. I've been following you since the morning, and everywhere you go up the mountain is where the herbs grow, and seeing that you haven't been able to find what you need for a long time, I know that you must be looking for the orchid. ”

Looking up at the man in front of him, he found that he was not only empty with a good skin, but also a playboy who could only seduce little girls. His martial arts are good enough, and his mind is meticulous enough.

"Who are you? Why did you come here? ”

"Don't mention it. I was chased and seriously wounded, so I kept on the run, but I accidentally broke into the vine forest, and then I was thrown here. Speaking of which, the previous playful smile was no longer there, with a heavy anger on his face, he had no intention of power, he just wanted to be a chic and happy idle person, playing the rivers and lakes, but he never thought that someone would put him to death.

The bottom of my heart was touched, I didn't think that he was not as casual as he looked, maybe everyone had their own helplessness, the voice was not as cold and hostile as before, "Since you're here, let's go in and have a look." ”

The two crossed the boundary marker, pushed through the bushes, and found a cave, but the entrance was sealed.

"Heartless Cave, presumably this is it. In my experience, there must be a secret in it. It's just that the hole is sealed, how do we get in? Chu Muchen looked at the entrance of the cave with a sad face.

If there is sulfur and nitrate, the problem is easy to solve, but the current situation, where to find these things? Mu Zhiyu's slender fingers tapped his chin, trying to think about whether there was another way.

Chu Muchen quietly looked at Mu Zhiyu at this moment, no longer that kind of cold face, her expression of hard thinking was really attractive, and she couldn't help but look sluggish.

"I've got a way." Mu Zhiyu looked at Chu Muchen happily, and found that he had been staring at him, and suddenly his anger rose, "If you look at me with this kind of look again, I will gouge out your eyeballs." ”

"Uhh ”

"Hmm. Let's go back first. ”

"It's hard to come here and go back like this?"

"I have a way to blow up the hole, but I need some materials. I can't find it here, so I have to go back and find a way. After speaking, ignoring Chu Muchen's doubts, he turned around and walked back.

After returning to the place where the tribesmen lived, Mu Zhiyu instructed Chu Muchen to find some soil from the old wall foundation. She found that while most of the houses here were wooden huts, there were also some abandoned adobe houses that sat on the edge of the tribe, and fortunately they could still be used to produce nitrate.

Mu Zhiyu went to the medicinal herb shop to buy some green alum, and returned to Chu Muchen's place, waiting for him to return while refining sulfur.

She found some rice vinegar in the kitchen, put it in a pot with the green alum she bought in a ratio of 1:5, covered it, and calcined it on a fire. After waiting for the green alum to dissolve, stir well with bamboo slices to fully mix the green alum and rice vinegar, then heat and continue to calcine until all are crimson colored, take it out and cool it.

By the time Chu Muchen came back, the sulfur had been successfully refined.

"What is this?" Chu Muchen pointed to the small pile of yellow things on the table, his face surprised.

"Brimstone. Did I get the soil I wanted? ”

He placed the cloth bag on the table, and when he opened it, a pile of dark yellow soil appeared in front of him, "What do you want this soil for?" I asked you for a long time before I left, and you said that you would come back and sue me. Now that the soil has been brought back for you, you can say it. ”

"Extraction." After just saying a few words, he didn't bother with him anymore.

put the soil that Chu Muchen took back in a basin, and poured some water to dissolve it completely. After it is fully dissolved, it is placed in a permeable white cloth and filtered, and then the water left to remove solid impurities such as sediment is heated and evaporated, concentrated until more crystals are precipitated, and finally cooled until colorless ** crystals are precipitated.

Chu Muchen stared motionlessly at Mu Zhiyu, who was constantly busy there, and when he saw the white crystal particles extracted from the pile of black loess, his eyes widened wide and round, leaving only disbelief.

"How did you do that?"

"Don't bother me."

Mu Zhiyu ignored Chu Muchen's constant nagging next to him, and took seventy-five percent of the **, fifteen percent of the charcoal, and ten percent of the sulfur mixed together, initially into powder, and then into granular black solids of different sizes.

"That's it." Mu Zhiyu looked at the finished product that he had been busy for a long time with satisfaction, and his expression was full of pride.

"You've been busy for a long time, just to get these little round grains that don't slip away?" Chu Muchen pointed at those black particles, full of incredulity.

"Don't look at them small, but they're powerful enough to blow open the mouth of the cave."

"Really?" Happily approached, picked it up with his hand and played with it, "This is the first time I've heard of such a good thing, and it's the first time I've seen it." What's its name? ”

"Gunpowder."

Mu Zhiyu simply cleaned himself up, and then looked at Chu Muchen, who was still in a daze with gunpowder, he couldn't help but feel funny, and he didn't know where in history their overhead era was, he hadn't even heard of gunpowder, it seemed that the age was unusually old.

"Don't be stunned. Prepare some candles and let's go. ”

"Now? But it's getting dark..."Chu Muchen pointed to the sky outside and said helplessly.

"It's pitch black in the cave, what's the difference between day and night?"

"Well..."

After taking the elaborate gunpowder and preparing some candles, the two set off towards the Cave of Despair.

Along the way, Chu Muchen's mouth kept opening and closing, constantly chattering, which made Mu Zhiyu very annoyed.

"Can you be quiet?" Xiu's eyebrows were deeply furrowed, and he couldn't bear it, and shouted impatiently.

"I find you really don't know how to appreciate. Such a beautiful man is in front of you, and he is indifferent, don't you like men? The folding fan was half-open to cover the lower part of his face, and he looked at her playfully.

"If you don't want to die, shut up immediately."

"Alas... I'm so humiliating. For the past three months, the little girls here have been chasing after me in the back of my ass, and I have been indifferent, why are I interested in you now? ”

A cold light suddenly swept over his whole body, making him feel gloomy and gloomy, "Ahem... Let's keep going. "It's fun to tease the iceberg beauty, but you can't go overboard...