Making you a son-in-law is not about making you conquer the world.

"What is this for?"

Lin Ping's heart tightened. He could kill him, but he absolutely could not cut off his lineage.

This thing is very precious.

Although Lin Ping will have to complete his mission and return sooner or later, he has encountered many interesting things and fun people in this life, and he wants to keep them for future use!

"Shut up! I, Lin Pingning, am unyielding!"

Lin Ping tried to press Qin Diao Hui's head down, but he couldn't get it down no matter what. The guy was sticking to him like a leech, and Lin Ping was a little flustered.

If this continues, his roots will really be severed; Qin Diaohui is truly willing to go for it.

puff!

Just as Lin Ping was at a loss, a sharp sword flew by and pierced Qin Diao Hui's neck, causing his entire body to shift three meters to the right, demonstrating the power of the flying sword.

"Qin Diaohui has disrupted the morale of the army; he deserves to die!"

Jiang Yunying said angrily, without even glancing at Qin Diaohui.

"Well done!" the soldiers shouted in unison, wishing they could go up and deliver the final blow.

Lin Ping, drenched in sweat with fear, kept reassuring his eighth brother while stomping hard on Qin Diao Hui's feet twice, shouting, "If you want to make Master Ping childless, you'll have to ask my wife first! This is the most important thing to my wife!"

Lin Ping chuckled, openly displaying his affection.

"We should have given Qin Diaohui more time..."

Jiang Yunying turned her head and regretted killing Qin Diaohui so early. She should have let Lin Ping suffer more to prevent him from always trying to cause trouble.

Even though she was dressed in military uniform, Jiang Yunying blushed and squirmed with embarrassment. She just couldn't understand how Lin Ping could say such a thing.

If it were anyone else, Jiang Yunying would have killed them long ago. But Lin Ping was her husband, so his words weren't vulgar or shameless; they were just private conversations between husband and wife.

Moreover, Jiang Yunying had begun to appreciate Lin Ping and was reluctant to kill him.

Next, Lin Ping led Li Mingxuan and the others back to the city lord's mansion quickly, as producing antibiotics within three days would not be so simple.

Pang Xingji lay obediently on the hospital bed, patiently waiting for Lin Ping, without the slightest panic in his heart.

First, he was not afraid of death; second, he trusted Lin Ping.

Li Yongnian also respectfully bid farewell to Jiang Yunying. On the way back, he was preoccupied, as if he had suddenly found a wide road, only to have it blocked by Lin Ping.

Today's events will take him a while to process.

Perhaps no one knew that for the next ten days, Li Yongnian actually shut himself away from visitors and devoted himself to studying needlework, genuinely believing that Lin Ping's inspiration came from this place.

Meanwhile, Li Yongnian sent people everywhere to inquire about a senior surgeon...

Lin Ping's actions greatly boosted the morale of the troops, who were all eager to serve the princess and hoped to receive personal guidance from their son-in-law.

Jiang Yunying also realized that forcibly increasing the burden on the soldiers was an unwise choice. Rather than doing these useless things, she should learn from Lin Ping and find another way, which might lead her to a new continent.

Jiang Yunying immediately went to the armory and demanded that the blacksmith Hua disclose the method for forging stirrups internally, and that they be made overnight, so that all cavalrymen could have stirrups in the shortest possible time.

Back in the city lord's mansion, Lin Ping dared not rest. He immediately ordered Li Mingxuan and the others to prepare the materials for making antibiotics.

Although it is not realistic to produce penicillin in large quantities under current conditions, there is more than enough penicillin to treat one person.

By evening, Li Mingxuan and the others had prepared all the materials. Lin Ping then ordered them to grind the soaked rice and sweet potatoes into juice.

Fortunately, the Wu Kingdom possessed various types of stone mills, which quickly ground rice and sweet potatoes into juice.

Lin Ping poured the juice from both into a small porcelain bowl as a culture medium to propagate Penicillium.

Everything was ready except for the east wind, and the east wind that Lin Ping needed was naturally Penicillium.

Although penicillin was not produced in ancient times, it does not mean that Penicillium mold did not exist. To be precise, Penicillium mold is everywhere, and there are many on moldy food.

However, Lin Ping was worried about the influence of other bacteria and didn't have time to mark the peels, so he could only use orange peels with the highest purity of Penicillium mold.

These rotting orange peels are the perfect breeding ground for Penicillium mold, and almost no other bacteria can be found on them.

Lin Ping scraped a large piece from a rotten orange peel and placed it in a porcelain bowl containing rice water and sweet potato juice, waiting for the Penicillium mold to multiply.

Penicillium is a fungus that reproduces using spores. To use a somewhat imperfect analogy, spores are like fish eggs; they mature and produce new spores seven days after leaving the mother plant.

However, Lin Ping did not have seven days, and penicillin is a metabolite of Penicillium mold reproduction. Producing penicillin is not as simple as just producing spores.

Therefore, most of the Penicillium molds that Lin Ping selected from the orange peels were mature and contained a large number of spores, which could produce enough spores in just one or two days.

Lin Ping breathed a sigh of relief after completing the culture of Penicillium. Without the magnifying function of his left eye, he would not have been able to determine whether the Penicillium was mature, which could have delayed Pang Xingji's best treatment time.

Next, Lin Ping kept his eyes glued to the porcelain bowl, as if afraid someone would steal his Penicillium mold.

Using the microscopic function of his left eye, Lin Ping clearly observed spores falling from the Penicillium mold and becoming new individuals.

During this process of reproduction and growth, Penicillium releases a metabolite, which is the penicillin that Lin Ping wants.

Watching the little life grow little by little, Lin Ping found joy in it, and even had an idea: to mass-produce penicillin, wondering how many lives it could save.

In this era before antibiotics, even a minor bacterial infection could be fatal, not to mention the various diseases caused by bacteria.

Once penicillin is mass-produced, it will benefit countless lives.

Lin Ping clearly remembered watching a TV series that talked about the important role of penicillin during wartime, which could even affect the course of the war.

Apart from some fierce battles of annihilation, most of the battlefields do not see many deaths; most deaths are due to bacterial infections following injuries. No wonder Jia Zhi used a branding iron to treat Pang Xingji's wounds.

If the city lord's private army had antibiotics, their strength would increase several levels, and they could immediately recover their strength after each battle, which would definitely break the enemy.

Lin Ping fell asleep while thinking, unaware that Jiang Yunying had been secretly observing him for a long time outside the door, and even personally came in to cover him with a cloak.

"My wife, don't go... my wife, don't go..."

In his sleep, Lin Ping gripped Jiang Yunying's delicate hand tightly and murmured incessantly.

If Lin Ping were awake, he would definitely get beaten up, but now that he is dreaming, he doesn't have much of a frivolous intention. On the contrary, it has enhanced the feelings between the two.