Zheng Sheng was a little apprehensive in his heart, and he would have to pay a considerable price for exchanging penicillin. He's ready.

"Redeeming a gram of penicillin requires... There is no limit to the amount of one ton of moldy substance that can be exchanged. He laughs.

"Moldy substances? Something moldy? Zheng Sheng frowned.

"Yes. The host should know that the so-called mold refers to fungi, and Penicillium is also a type of mold. So, to exchange for penicillin you need mold. ”

"I see." Zheng Sheng nodded.

"Also, the host needs to be mindful of the time. From the early morning after the host wakes up, there are three days for the host to collect materials. During these three days, the host can redeem at any time. In addition, there is no longer a restriction on the spatial distance of the host. Naturally, the system will determine if the host's exchange item is indeed owned by the host. ”

Zheng Sheng nodded. He suddenly felt that this exchange method was much better than before. There are no restrictions on weight, space, or distance. There are a lot of things that can be gained if done correctly. Judge all? Is it to restrict him from exchanging other people's things to the system? He hadn't thought of it that way. But with this exchange model, it seems that he can get planes, cannons, ***, right?

"Don't think too much about the host, for items that can change the general trend of the world, such as weapons that the host thinks, the exchange conditions are extremely harsh. The conditions for exchanging penicillin are even more stringent. Moreover, the host should not forget, if you want to redeem it, you have to complete the conditions. ”

Zheng Sheng's smile dissipated, what conditions were completed? That's harder than climbing to the sky!

Early in the morning, Zheng Sheng opened his eyes and looked at the wooden beams on the roof. He felt like he had come to another world.

Immediately, he remembered the task he had already started: a ton of mold for a gram of penicillin: "A ton for a gram." It's really ruthless! Zheng Sheng muttered. Can this gram of penicillin save a person? How much penicillin does he need to redeem to save the next person?

Moldy things are also common, but it is not easy to get "mold" measured in "tons". Especially since this is Jiangling City, not Nanyang, not Shunyang, and not Wanquan Town.

There are not many people in Gangneung from the Zheng family, and more than half of them are about to leave.

Zheng Sheng thought of the plan that Zheng Wen had mentioned last night. At this time, he should be about to take people to set off!

Zheng Sheng hurriedly went out and found Zheng Wen when he was inspecting the goods in the carriage.

"Brother, you stop first." Zheng Sheng hurriedly stepped forward and said.

"What? Have you figured it out, do you want to set off with me? Zheng Wen asked.

"No, we're not leaving."

"No! Even if you take the waterway, you can't afford to delay it! Moreover, these gifts to the Lu family are very valuable, so I don't have to worry if I don't follow them. Zheng Wen frowned.

"Everybody is not leaving, I have more important things to do. Moreover, you don't have to bring these goods over, it's too troublesome! What's more, our trip is not a collection, just a competition with others. If I lose, do I have to bring them back? ”

"The yellow silk thieves have all been defeated by you, and Shi Chong may not continue to stop them." Zheng Wen said softly.

That's why he's working harder on it! The yellow silk thief was defeated, and our two families joined forces again, didn't he fail completely? I think Shi Chong will definitely want to find a place here in the Lu family! ”

Zheng Wen sighed: "Okay, why can't I go?" What is more important than your wife? ”

Zheng Sheng shook his head: "It's too late to explain, brother, let everyone go out to look for ...... No, buy moldy stuff at a high price. ”

Zheng Wen's eyes widened: "Moldy things, food?" What are you doing? ”

"Help! The more the merrier! Zheng Sheng said affirmatively.

Zheng Wen asked in disbelief: "Moldy things can save lives?" …… Save Liu Yan'er's life? ”

"Not only her, but also the badly injured guards in the camp! Even for most diseases in the world, that medicine works! ”

Zheng Wen's eyes lit up, and he took a deep breath, "I'll go and gather people right away." ”

Zheng Wen had a wind under his feet and left quickly.

While Zheng Wen assigned the task, Zheng Sheng went to the kitchen and found the cook.

The cook of Zheng Mansion is from Jiangling, and he was temporarily hired by Zheng Sheng and these people after they moved in these days.

"Bad food? No, no, the villain will never waste a grain of food from the world. The middle-aged cook patted his strong chest and reassured.

Zheng Sheng couldn't cry or laugh, and patiently explained: "I'm not here to trouble you, the food I want to moldy has other uses." ”

The cook touched his head a little confused: "Well, there are indeed two hairy steamed buns yesterday, and I plan to send them to the rhubarb in the front yard later." ”

As he spoke, he took out rhubarb's food from the basket under the stove.

"Feed rhubarb freshly made food!" Zheng Sheng took it and commanded.

Zheng Sheng looked at the two steamed buns...... The white hairs on it are indeed mold. It's just too little! Zheng Sheng thought, maybe you can let it go for a while and make it bigger?

However, the patient can't wait!

"No matter what, I must save you!" Zheng Sheng said silently.

Gangneung City is making waves again.

That morning, the Zheng family knocked on people's doors door to door.

Shopping? All right! Welcome to buy moldy food? What's going on?

Soon after, with great doubts, the people sent off the disappointed families.

The Zheng family's collection of moldy food throughout the city brought great consternation to Gangneung City. What the hell are they going to do?

In fact, even the Zheng family's family members were puzzled, what did Zheng Sheng want to do with moldy food? What is this thing used for besides feeding animals?

When everyone was full of doubts, the first wave of moldy food collected arrived in front of Zheng Sheng.

"That's all?" Zheng Sheng was disappointed, it took two hours, and only found this small pile? How many pounds can it weigh? And there's less mold!

"Food is the foundation of survival. How can ordinary people have moldy food? Zheng Wen said, "This is already a lot." Kewu, how can these things be used to save lives? ”

"If that's all it takes, I'm afraid I won't be able to save people." Zheng Sheng calculated, these can probably only be exchanged for milligram-level medicines, and naturally they can't be used to save people.

Zheng Sheng walked around in distress, he really thought about things too simply, how could he find a ton of moldy food in a short period of time?

Besides, a ton for a gram? How many tons does he need to find to save someone?

This is also unknown.

Things are at an impasse. Zheng Wen saw that Zheng Sheng was still insisting, so he sent everyone outside the city to continue the search.

Not long after, a family member hurriedly came in and said: "Shizi, the state capital soldier Cao is engaged in a visit." ”

"Hyoso?" Zheng Sheng was stunned. Someone from the state capital actually came? Moreover, the person who came was still engaged in Bingcao, and this was the chief officer in charge of Bingcao in a state.

Zheng Sheng asked the family to bring people in.

"Bing Cao is engaged in Cao Ke and has seen Zheng Shizi." Cao Ke is a burly man, and when he saw Zheng Sheng, he did not look arrogant and rude.

Zheng Sheng returned the salute: "Engaged adults, do you have something to do with me?" ”

Cao Ke said with a smile: "The prince defeated the Yellow Silk Thieves, and the number of thieves killed has been counted. According to the previous arrest warrant posted by the state capital, the prince could get a large bounty. I was ordered by Lord Assassin Shi to ask the prince to go to the state capital to receive the reward. ”

"Really?" Zheng Sheng was a little puzzled, Shi Chong was convinced?