Su Yujing nodded, and it took her a long time to compose herself.

Otherwise, he was afraid he would burst into tears if he opened his mouth.

"My little sister has grown up!"

"My brother was both relieved and heartbroken."

Seeing the tears welling up in her brother's eyes as he tried to hold back, Su Yujiao quickly changed the subject.

"Brother, I'm going to buy a few skewers of candied hawthorn. He Jie'er and Xiao Ze both love them."

When the two arrived home with candied hawthorns, their two children were reading at a stone table under a banyan tree.

He was still washing clothes by the well, while Chen was busy in the kitchen.

Su Baoguo's coughing could be heard coming from the bedroom...

Although Su Yujiao gave her family a lot of money, moved to a better courtyard, and even hired two maids and servants.

However, even after Chen dismissed them, He continued to wash clothes and live frugally.

They knew they couldn't rely on their married daughters for financial support forever, so they continued to live in poverty.

Su Yujing watched his wife sitting beside a mountain of clothes, beating them, and watched his mother cooking in the dark. He stood stiffly at the door, not having the courage to go in.

He caused all of this; if he hadn't been so useless, they wouldn't have had to live in such poverty.

Su Yujiao understood her brother's feelings at that moment. She tugged at his sleeve and gave him an encouraging look.

Then he shouted into the courtyard, "He Jie'er, Xiao Ze, look who's back!"

Hearing their aunt's cheerful voice, the two children looked up at the doorway together.

Xiao Ze looked at the slender man next to Su Yujiao with a sense of unfamiliarity.

He Jie'er excitedly shouted, "Father!"

"Father!"

The little girl excitedly rushed over, and Su Yujing quickly squatted down, opened her arms, and let her daughter jump into her embrace.

In the courtyard, the sound of beating clothes stopped, the sound of chopping vegetables in the kitchen stopped, and even the coughing in the bedroom disappeared.

Mrs. He threw down the washing mallet in her hand and stumbled to the door.

Upon seeing her long-lost husband, she squatted on the ground, covered her face, and cried uncontrollably.

Chen's legs went weak as she ran to the door, nearly fainting from excitement, but fortunately Su Yujiao was there to support her.

"Xiao Ze, quickly help your grandfather out."

"good."

Although the little one didn't understand why everyone was crying, he was still very obedient.

Su Yujing helped his wife up, reached out to wipe away her tears, and whispered words of comfort.

When Xiaoze helped Su Baoguo out, he suddenly lifted the corner of his robe and solemnly knelt down to kowtow.

"Father, Mother, your son is back."

"It is my fault for being unfilial and causing my parents worry."

The two elderly people helped him up while crying, looking him up and down and asking him how he was doing.

"Brother, you stay and talk to our parents and sister-in-law. I'll cook some of my signature dishes. Let's have a good get-together tonight."

After Su Yujiao finished cooking, the smiles on her family members' faces disappeared, replaced by worried expressions.

Knowing what she had sacrificed, Madam He knelt down and kowtowed to thank her.

Su Yujiao explained for a while before her family felt a little more at ease.

After the family was reunited, Su Yujing personally escorted her back to the Lu family home.

He wanted to go in and see the two children, but considering that he had just been released from prison and could not visit other people's homes, and also fearing that he might bring bad luck to the children, he had no choice but to give up.

"Be careful in everything you do, and be sure to return safely."

Early the next morning, Su Yujiao set off with the Crown Prince, and asked him to collect fresh artemisia from various places.

The prince asked, "Do we need to wear masks and face coverings this time?"

Why haven't you prepared anything?

"If time is of the essence, I can order a two-day delay in departure."

Su Yujiao explained, "We need some, but not too much."

“This time is different from the last time.”

"Generally speaking, malaria outbreaks do not occur in winter. Malaria is transmitted through blood, mother-to-child transmission, and mosquitoes."

"Without mosquitoes in winter, it is difficult for a large-scale outbreak to occur."

"If Chen Yunniang hadn't polluted the river with the patients' blood, there would never have been an outbreak of malaria."

That's why Chen Yunniang's shady tactics really stirred up trouble.

Anything outrageous could happen to her. If she hadn't transmigrated into a time machine but into a book, she would have suspected that Chen Yunniang was the darling of heaven and the heroine of the book!

Hearing Su Yujiao's words, the Crown Prince once again secretly vowed to tear Chen Yunniang to pieces.

She's a complete menace!

The imperial physicians discovered that Su Yujiao had someone prepare a large quantity of artemisia annua, and it was fresh artemisia annua that had not been processed.

“Madam Lu, ancient books record that artemisia does have the effect of treating malaria, but the effect seems to be very average.”

"And those were carefully processed medicinal materials. If you use unprocessed artemisia, the effect will probably be even worse."

"Don't you have an effective treatment for malaria either?"

Su Yujiao explained: "The key to whether artemisia is effective lies in the method of administration."

"If you decoct the medicine in water and take it, its efficacy will be greatly reduced."

"Juicing and drinking the medicine will double its efficacy."

When Physician Zhou heard her line of thought, his eyes lit up.

They couldn't wait to ask how to juice it, and what the specific method was.

“Collect fresh artemisia annua, wash it clean and dry it.”

"Grind the dried artemisia into powder."

"Put the artemisia powder into a reactive solvent, such as ethanol."

"Artemisinin is extracted from the solvent under controlled temperature and time."

The imperial physicians could understand the first two parts, but they understood less and less as the story progressed.

What is ethanol?

What is artemisinin?

"Ethanol is alcohol."

Zhou Taiyi and the others all knew what alcohol was, after all, the last group of imperial physicians who went to the epidemic area was this very group.

They just didn't expect that alcohol had another name.

"Artemisinin is a needle-shaped, transparent crystal. Crystals are... well, you've all seen large snowflakes, right? That's called crystals."

"I've already written the extraction method and sent it over by express courier."

"Let the frontline medics try to extract it. If they can extract it before we arrive, we can save lives sooner."

After two months of rapid march, the prince's entourage finally arrived at the battlefield, Hutou Pass.

After Longhai Pass fell, Lu Ziqian could only lead his men to retreat to Hutou Pass.

As time went on, the number of patients in the camp increased.

It seems that the Jurchens were also infected with the plague, specifically both smallpox and malaria.

However, their general Ashina used extremely cruel methods to kill tens of thousands of patients, which seemed to effectively prevent the spread of the plague.

Seeing that there were patients everywhere, Su Yujiao immediately threw herself into her work.

When Lu Ziqian learned that Su Yujiao had also come, he was first stunned, then overjoyed, and ran towards the military medical camp like a fool.

Su Yujiao was examining the artemisinin extracted by the military doctor when she was suddenly hugged from behind.

Seeing this, the others in the camp wisely left.

"Jiaojiao, I miss you so much."

"There isn't a day when I don't want to see you sooner."

Su Yujiao was stiff all over, feeling the man's firm chest and strong heartbeat, and it took her a while to relax.