Lu Cheng quickly calmed down. He looked at Qin Jiu and said, "I'm fine. You don't have to accompany me. Go chat with them."
Qin Jiu was a little worried: "Are you really okay? I think you look like you've lost your soul..."
"It's really nothing," Lu Cheng pretended to be surprised, "Why are you so concerned about me all of a sudden? Do you like me?"
Qin Jiu was annoyed. "Don't be so sentimental. Who likes you?"
She left angrily.
Lu Cheng was still smiling, but there was an inexplicable sadness in his smile.
Looking at the bustling crowd in the distance, he suddenly felt a sense of loneliness.
The next moment, a pair of hands grabbed his arms.
"Stop pretending to be so deep and come over here to chat!" Qin Jiu didn't say anything and pulled him towards the crowd.
Looking at her back, Lu Cheng felt his heart beating faster.
Everyone was talking and laughing, and the car was filled with laughter.
Soon, everyone's topic turned to the erosion of demonic energy. They all talked about today's symptoms and looked at Qin Feng together.
Qin Feng's expression turned serious: "The turbid demonic energy will indeed cause damage to the human body, and there is no medicine to cure it."
"There's no cure?" Qin Jiu was shocked. "Are we going to remain in this state forever?"
Meng Qingyin grasped the key point: "Turbid demonic energy? Could it be that all the demonic energy in the Tongtian Demon Tower is turbid demonic energy?"
Qin Feng gave her an approving look, "That's right. The demonic energy in the Demonic Tower is turbid and mixed. If the human body inhales too much, it will cause various discomforts."
Meng Qingyin suddenly thought of [spider silk].
The introduction says that spider silk can be used to refine demonic energy, which means...
"The demonic energy extracted from the spider silk is no longer turbid demonic energy?" Meng Qingyin asked.
Qin Feng nodded: "You are very perceptive. As for your concerns about the damage that the turbid demonic energy will cause to the human body, there is no need to worry about that. The turbid demonic energy will dissipate over time."
Meng Qingyin looked at her with burning eyes: "You must have a way to block these turbid demonic energies, right?"
Qin Feng smiled: "I have studied demonic energy for many years, and a few days ago I developed a breathing mask that can prevent me from inhaling too much turbid demonic energy."
As she spoke, she took out a mask that was somewhat similar to an oxygen mask, but the style was very simple and didn't look like anything special.
But Meng Qingyin knew that it was definitely not as ordinary as it seemed.
"Sister Feng, how many breathing masks like this do you have?"
Such a seemingly simple mask can prevent evil spirits from invading the human body. Players will definitely be happy to buy it.
Qin Feng saw her intention and shook his head with some regret, "I only made one, so I plan to keep it for my own use."
Meng Qingyin was a little disappointed. If there was only one person, it wouldn't actually be of much use. Their team consisted of five people, and at least five of them had to wear breathing masks.
Qin Jiu looked at the mask carefully, and after a moment asked, "Is it really impossible to mass produce it?"
Qin Feng: "The difficulty in mass production is mainly due to the large amount of pure demonic energy required." She shrugged helplessly, "The Heavenly Devil Tower is a bit difficult for me, so obtaining pure demonic energy is also very difficult."
Meng Qingyin: "How much pure demonic energy is needed to make a breathing mask?"
Qin Feng: "Only 10ml is enough."
Meng Qingyin asked again, "How much pure demonic energy can be extracted from that spider silk?"
Qin Feng: "1L."
Meng Qingyin was puzzled: "1L? Doesn't that mean you can make 100 respirators?"
Qin Feng rolled his eyes gracefully, "Just now I said you were smart, and now you're acting stupid."
Meng Qingyin: “???”
Qin Feng: "Guess how I made this breathing mask that can block turbid demonic energy?"
Meng Qingyin thought for a moment and understood. It must be because of a lot of experiments that consumed a lot of pure demonic energy.
Seeing that she understood, Qin Feng said, "And I also need pure magic energy to research magic equipment. For me, pure magic energy is not enough."
Meng Qingyin took out all her spider silk and magic-absorbing stones. "Sister Feng, this is all my spider silk and a magic-absorbing stone. Could you please help me make a breathing mask from them? As a reward, I'll give you a piece of spider silk, and you can use it to continue your research. Oh, and my friends also have a lot of spider silk, so I'd be grateful to you for that..."
Qin Feng raised his hand to interrupt her, "It's too much. I can't do it."
Meng Qingyin choked.
Qin Feng: "You think I'm a machine on an assembly line, that I can make so many respirators by myself? How about this, I can make one for all of you. I really can't make more than that."
Meng Qingyin: "Why don't you tell me how to make a respiratory mask so I can do it myself? Of course, this is your research result, and I'm willing to pay for it."
Qin Feng didn't refuse this time: "Are you sure you want to buy the method of making a breathing mask? Let me tell you, the production process is very complicated."
Meng Qingyin simply said, "Name your price."
Qin Feng: "How about this, just give me ten spider silks."
Meng Qingyin's expression was a little strange. "Only ten spider silks?"
Qin Feng looked at her in surprise, "You still think it's not enough?"
Thinking back, she had finally formed a team of five to enter the Demonic Tower of Tongtian, but ended up having to repeatedly clear the first floor over a dozen times before she was able to pass it.
As for the second layer of the exploding spider silk, they had to brush it no less than twenty times before they finally got a spider silk.
As a result, the five people almost met Tai Nai due to the erosion of evil spirits.
Why does she know that evil energy can corrode the human body?
It's all just a blood and tears story of how a doctor becomes a good doctor after suffering from a long illness.
Later, she used the pure magic energy extracted from the spider silk to develop a breathing mask, and also wanted to research magical equipment. She really wanted to break the spider silk into two.
Meng Meng actually thinks ten is not enough?
She felt a little guilty asking for ten spider silks!
If Qingfeng knew that she had coveted ten pieces of silk from her master, he might even break off all ties with her!
After all, Qingfeng was one of the team members who almost went to see Tainai, and she knew very well how difficult it was to obtain spider silk.
Fearing that Qin Feng would go back on his word, Meng Qingyin agreed immediately: "Deal!"
Qin Feng also breathed a sigh of relief.
Both of them felt guilty about this transaction, yet also felt they had gotten a great deal.
Of course, Meng Qingyin definitely didn’t have ten spider silks now, so Chen Leying helped her make up the rest and gave them to Qin Feng at once.
Qin Feng held the ten spider silks in his hands as if they were treasures.
Just then, Qingfeng came.
Qin Feng subconsciously hid the spider silk behind his back, looking guilty and nervous.
Qingfeng noticed that something was wrong with her, "What's wrong with you?"
Qin Feng didn't dare to say a word.
Qin Jiu spoke frankly: "Sister Feng just traded ten spider silks with Meng Meng."
Qingfeng was stunned for a moment, obviously recalling the painful memories of the past.
But she didn't say anything, she went straight to the table and took a piece of strawberry cake and started eating.
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