That medicine was Cheng Dahua's green saliva.
Cheng Anlang filmed a video in which a strange green potion fell onto a fragment of a discarded finger from an advanced mecha, instantly burning the fragment to ashes and damaging something underneath it.
The finger fragments of the advanced mecha were picked up by Cheng Anlang on a garbage planet a long time ago. Although they could be exchanged for a lot of money, he never wanted to exchange them and kept them in his storage compartment. He never expected that they would be used in this way now.
Cheng Anlang accidentally discovered that Cheng Dahua could actually adjust the concentration of her corrosive saliva. If possible, he believed it could even corrode S-class mechs.
There's nothing wrong with it, but it's too incredible to say out loud, and he doesn't have any S-class mecha fragments, so he has no way to verify it.
The anonymous trading market offers two methods: direct pricing and auction. Cheng Anlang chose auction. He wasn't sure what price to set for this potion. Setting it too low would be a loss, while setting it too high might not attract buyers. So he simply listed it in the auction section and left it to fate.
He didn't sell too much of the potion, just three portions. At first, Cheng Anlang was a little embarrassed to sell it, feeling that it wasn't right to sell something that could be used to kill. But when he opened the anonymous trading market, he found that it was a small matter at all; the market had everything.
For example, there are strategy guides like "Shocking! I actually assassinated my opponent using this method!", "Attention! These details are very important when killing someone!", and "Beware! The assassination failed, and the reason was...", as well as gossip like "Heartbreaking! Two assassins actually did this kind of thing in the house!", and so on.
There were also all sorts of random weapons, such as the long-lost Rain of Pear Blossom Needles from Ancient Blue Star, which gave Cheng Anlang goosebumps. He would have to be more vigilant in the future to avoid being shot to death by needles that came out of nowhere.
There are also vendors selling small knives, which are actually named "burnt knives," but most of them are laser knives nowadays. Judging from the seller's photos, it's just an ordinary small steel knife. No wonder it's been on the market for so long and no one has bought it.
He copied the title of his product above, calling it "Breaking News! The Most Useful Potion in the Interstellar Age, Those Who Didn't Get It Are Crying!", and then posted it.
Surprisingly, someone actually placed an order.
The prices kept increasing and were even higher than I had expected.
Three days later, the medicine was auctioned off at an extremely high price, much to Cheng Anlang's surprise.
In fact, on the last day, only two people were bidding. The last person bought two copies, and the other person bought the remaining copy.
Just as Cheng Anlang was about to collect Cheng Dahua's saliva, he realized that he didn't have a suitable container to hold it...
Since it's about corroding the saliva of advanced mechs, it needs to be made of materials even stronger than those of advanced mechs—materials used in S-class mechs. But he didn't have them; he couldn't afford them and couldn't buy them...
This is troublesome; he only thought of this today.
If he had written that he needed to bring his own container, it wouldn't have been his fault.
He would have to pay a penalty fee if he canceled the deal.
"Ugh..." He scratched his head in frustration and collapsed onto the bed.
what to do?
It wasn't easy to earn this much money.
Don't end up with no Star Coins left and still have to pay a penalty for breach of contract.
Cheng Anlang thought for a long time but couldn't come up with a good idea. He could only sit up, open the trading market, and tell the two buyers to bring their own containers, fill them up, and then send them back. He would deduct the cost of the containers. If they didn't agree, the transaction would have to be canceled.
Cheng Anlang was prepared to cancel the deal, since there were very few people who could use S-grade materials to make containers.
Unexpectedly, both of them chose to send the container.
It seems these two have some wealth.
Neither the buyer nor the seller knows the other's address when sending or receiving goods. All goods are handed over to the school's transaction station, and the buyer can pick them up directly using the pickup code.
When Cheng Anlang received the package and opened it, he found a small bottle made of S-grade material. The texture was somewhat like ceramic; it was sturdy but not heavy, and it shimmered with a fine luster under the light.
This was the first time he had ever seen S-grade materials. He had never picked them up or seen them before on the garbage planet.
The buyer who wanted two portions didn't ask Cheng Anlang to deduct the cost of the container. The buyer who bought one portion quoted a price for the container, which was basically equivalent to giving the potion away for free. In fact, based on the market price of S-grade materials, that price was a great bargain for Cheng Anlang.
S-grade materials are extremely precious and rare, and are mostly used to assemble mechs. Few people can use them for anything else. Those who can use S-grade materials to make bottles must be nobles of the Imperial Star, and not just ordinary nobles.
Cheng Anlang, holding the bottle, said to Cheng Dahua, "Make sure you adjust the concentration correctly, and don't make a mistake. If you spill this stuff and it breaks, we can't afford to compensate you even if we sell it."
Da Hua nodded, smacked her lips twice, and then opened them again.
Cheng Anlang carefully held the bottle close to Cheng Dahua's mouth: "Don't move it. If it drips onto the floor and burns through it, we'll have to pay a lot of money, and then we'll go hungry."
Cheng Anlang then laid another layer of discarded materials he had picked up from the combat room on the floor.
When Cheng Dahua heard about losing money, she became extra careful, remaining completely still, even putting her usually slightly protruding tongue back into her mouth. Her mouth was open, and drool dripped into the small bottle.
As Cheng Anlang drank water, he thought that if he ever became rich, he would try to find someone to make a flowerpot for Cheng Dahua using S-grade materials. The current flowerpot was just something Cheng Anlang bought casually and wouldn't last long. If it were made of S-grade materials, it would be of better quality and look nicer, allowing Cheng Dahua to show it off everywhere.
However, that might be a very, very long time from now.
Chapter 6, Section 6: Zhang Mingyu
Advanced combat zone, room A.
Shen Rui came back excitedly from outside, carrying a duck in one hand and a package in the other, and said to Zhang Mingyu and Yu Ya, "I bought something good!"
Zhang Mingyu was looking at the test report that someone had sent him. His mutated beast, a small yellow lizard, was clinging to his shoulder and looking at it with him. After hearing Shen Rui's words, they both looked up.
Shen Rui put the duck down, unpacked the package, and took out a small bottle.
"This is a potion I just got; it can corrode advanced mechs!"
Yu Ya leaned closer and glanced into the bottle: "Don't my dad have some of these?"
Shen Rui shook his head: "It's different. Dad's is for processing waste. It leaves residue on the spot after use, and the amount used is huge. But this one, I watched the video carefully. It leaves nothing after burning. Zhang Mingyu, what's with that expression!"
"quack!"
Shen Rui's duck also turned its head to glare at Zhang Mingyu, only to be flicked on the head by the little lizard with its tongue.