The male lead went insane after the female supporting character gave birth to the main villain'

Su Yan offered to teach all the military doctors and apprentices various first aid and bandaging techniques.

She also taught the servants she brought with her, as well as the fifty troops left behind by the Soviets, to go to the town every day to help change the bandages and dressings of the wounded soldiers.

She goes there every other day.

Staying at home wasn't about being lazy or indulging in leisure; rather, she wanted to research antibiotics that were suitable for this era.

The prescription was something she obtained from the system.

As a result, she owed the system 1,000 points.

Half a month later, Qin Yan led his troops to attack Minzhou, and many wounded soldiers were sent back to the town every day.

The wounded soldiers who were brought back were seriously injured. Their wounds were simply treated with some hemostatic medicine and wrapped with a swaddle cloth twice before being sent back to the rear.

Military doctors in the barracks mostly treat wounded soldiers with minor injuries who can be treated and still return to the battlefield.

Su Yan sent out all the servants and retainers from her mansion, and also used her own money to recruit many people from the town.

The plan is to have the system select some honest and upright people, teach them first aid and bandaging, and have them help treat wounded soldiers every day, giving them two hundred coins each day.

In three days you'll have six hundred coins, in five days you'll have a thousand coins, and a thousand coins is one tael of silver.

If you save every penny, one tael of silver can last a family a month.

In peacetime, when grain and salt weren't so expensive, one tael of silver would have been enough for a family of five to live on for two or three months.

Moreover, they not only received wages, but also learned a skill, which would allow them to become apprentices at a medical clinic or join a military medical unit, following the army south and earning one or two taels of silver each month.

In no time, people came to almost every household in the town, including men, women, and children.

After the system screening, nearly eighty people remained. Su Yan kept them all and personally taught them.

With more people skilled in first aid and bandaging, wounded soldiers received treatment, and the mortality rate decreased significantly compared to before.

However, the town was five miles from the military camp. The wounded soldiers were carried back to the camp from the battlefield and then transported to the town in horse-drawn carriages without carriages. This process was very time-consuming, and many wounded soldiers could not receive timely treatment and ended up with disabilities.

Some even died before they were even delivered to the town.

After the army captured Changyuan County in Minjiang Commandery of Minzhou, the army broke camp and moved further away from the town.

Therefore, Su Yan wrote to Su Zhan that she was going to Changyuan County with the military doctor.

Su Zhan knew long ago that Su Yan had disguised herself as a man and gone to the place where wounded soldiers were being treated.

He wrote to stop her, but Su Yan wouldn't listen. He was busy with military affairs and lived five miles away from Su Yan, so he couldn't manage the matter. He could only tell her to be careful not to let anyone discover her identity.

The previous dynasty was extremely harsh on women. Women were almost never allowed to leave their homes. If a man looked at them for too long, they would be accused of violating female virtues.

If a man sees your feet and hugs you, you're left with only two options: marry that man or have your hair cut off and become a nun.

If someone stubbornly refuses to follow these two paths, they might be "killed by illness" or "suddenly die" by their family.

Families who truly love their daughters will send them to another place to change their names and surnames, and will also secretly give them gold and silver jewelry to support them.

In families that are heartless and do not value their daughters, it is truly a case of "dying from illness" or "dying suddenly."

Now that the Great Zhou Dynasty has just been established, the customs and traditions of the previous dynasty still prevail among the common people and aristocratic families, and women are still treated with strictness.

If people found out that Su Yan disguised herself as a man, went into a group of men, and touched the bodies of countless men, she would probably be driven to death by the verbal attacks of those scholars.

Su Zhan was worried that she was too young to be able to disguise herself properly, so he arranged for two androgynous female sergeants to pose as men and stay by her side to help her treat the wounded soldiers and prevent her from doing anything.

Having no other choice, Su Yan later focused on studying the antibiotic prescriptions provided by the system.

The reason she wrote to Su Zhan to tell him she was going to Changyuan County was because she had developed an antibiotic that suited the times. Although it was not as effective as modern antibiotics, it was the best medicine available in this era.

Anyway, the military doctors who treated the seriously wounded soldiers in the rear all said that it was the best external wound medicine they had ever seen!

For oral administration, without a sterile room, Su Yan is not easy to make, and it has not been researched yet.

But she did not give up. After arriving in Changyuan County, she locked herself in her courtyard and kept trying.

They finally figured it out three months later.

With both topical and oral antibiotics available, the number of wounded soldiers dying in the military camp has greatly decreased. As a result, Qin Yan increased her favorability rating by a full twenty points, bringing it to ninety points.

For the next two years, Su Yan spent money to purchase medicinal herbs and donate them to the military camp.

Qin Yan spent six months conquering Minzhou, eight months conquering Lingzhou, and finally ten months taking Yuezhou.

Thus, the entire world came under the rule of the Great Zhou.

During the attack on Lingzhou, Qin Yan was betrayed by a junior general he had personally trained. If Su Zhan hadn't reacted quickly and pushed him away, Qin Yan would have had his heart pierced.

The young general was personally rescued by Qin Yan during a march in the north, and he has been by his side for five years.

The young general's skills were all taught by Qin Yan.

Qin Yan never imagined that he would betray her, and was completely unprepared for him.

When it first happened, Qin Yan really wanted to ask him why.

Seeing Su Zhan's wounds and Su Yan lying by the bedside with tears streaming down her face, he didn't want to ask anything anymore.

He ignored his pleas and listened to his grievances, drew his sword and personally killed the young general he had personally trained.

When Su Zhan pushed Qin Yan away, he didn't have time to dodge and was slashed in the stomach by the young general, leaving a long wound.

If Su Yan hadn't stitched up the wound and developed topical and oral antibiotics early on, Su Zhan would have died from his serious injuries as in the original story.

Rescuing Su Zhan completes half of the first side quest. The other half will be completed after Su Zhan returns to Kunjing to be rewarded for his contributions, and then we'll find him a wife and have a child.

Since being betrayed, Qin Yan has stopped easily trusting anyone except for Su Zhan and Su Yan.

His back will only be entrusted to Su Zhan.

Even the civil and military officials who had fought alongside him from north to south had to remove their weapons and undergo inspection by his attendants before they could approach him.

Everything he eats, drinks, uses, and wears must undergo rigorous inspection before being delivered to him.

During the subsequent attacks on Lingzhou and Yuezhou, Qin Yan was assassinated and poisoned hundreds of times, all by people close to him.

He had his civil and military officials, his attendants, and his retainers.

Having experienced these people's betrayals, Qin Yan became increasingly distrustful of everyone.

A month after recovering the last lost territory, the imperial court sent officials to take over Yuezhou.

Qin Yan left 100,000 troops to guard the border of Yuezhou, and led the remaining 400,000 troops to the northwest, leaving 300,000 troops along the way to guard three border prefectures.

Finally, he returned to the capital with an army of 100,000 and his various civil and military officials.

Qin Yan originally planned to slowly return to the capital with his soldiers, but halfway there he received a letter from his birth mother, Liu Shi, who is now the Consort Shu.

The letter essentially said that the mother and son had not seen each other for more than five years, and that her birthday was in two weeks, and she hoped that he could rush back to Kunjing to celebrate her birthday.

Although Qin Yan did not have deep feelings for his birth mother, Consort Shu, filial piety was deeply ingrained in the people of this land, especially among scholars and noble families, who placed great emphasis on filial piety.

Therefore, Qin Yan, along with the male protagonist Qin Yang, the siblings Su Zhan and Su Yan, and his own and the Su family's retainers, broke away from the army and planned to travel day and night to return to Kunjing before Consort Shu's birthday.

On their first evening after leaving the main army, they arrived at a small town and booked two adjacent inns, intending to stock up on more dry food and fodder in the town.