She showed the rouge she made to her friends, who all praised it highly and expressed their willingness to buy it from her.

From then on, in addition to earning a salary from her job, she also earned a lot from making rouge in her spare time. Her work standard also improved significantly along with her income.

She moved from a basement apartment that cost one hundred yuan a month to a shared apartment on the ground floor that cost two thousand yuan a month. She was willing to spend money on food and drink, and was no longer as stingy as before, spending every penny carefully.

Therefore, many times, she is grateful that she can calm down and study the ancient method of rouge.

Otherwise, before she traveled through time, she had been living in a ten-square-meter basement, not turning on the lights during the day and living at night.

As for movable type printing, she was also well aware of its importance to ancient people. Her willingness to give it to the eldest prince was enough to prove her sincerity.

She believed that as long as the eldest prince saw the achievements of movable type printing, he would not care that she could not make explosives.

Yes, that's right, she told the eldest prince that she could make explosives, just to fool him.

How could a poor student like her know how to make explosives? She only remembered the three main components of explosives.

These three indispensable components are known to every junior high school student in later generations.

But knowing it doesn't mean that one can successfully make explosives, let alone the kind of explosives she told the eldest prince about, which are powerful enough to kill dozens or even hundreds of people in an instant when they explode.

The reason why she said that to the eldest prince was that she knew that the Great Zhou was still in the era of cold weapons, and weapons related to explosives belonged to the category of hot weapons.

Things like explosives are not only useful to the eldest prince, I believe they are extremely tempting to any general leading troops to fight. However, the eldest prince would not ask her to write down the formula for explosives the first thing he did after bringing her back to the palace.

Fortunately, she had a trick up her sleeve and did not write it down directly. Instead, she asked the eldest prince to send someone to buy charcoal, sulfur, and saltpeter. Anyway, the eldest prince didn't know what else was needed to make explosives besides these three things.

By then, she would just have to find an excuse, saying that explosives, such a heaven-defying thing, is time-consuming and laborious, and requires a lot of time and energy to research, so as to delay the process and wait for three or four years. By then, once the eldest prince ascends the throne, he will no longer ask her for explosives.

She no longer needed to spend time researching explosives. Thinking of this, she couldn't help but praise her own cleverness. She was indeed a smart and clever "little baby".

As for whether the eldest prince would hold her accountable, she was not worried at all. Soap, rouge and movable type printing were not given for free.

The eldest prince can easily make a fortune by giving any one of these three things to a capable person.

With a steady stream of income, the eldest prince no longer has to worry about maintaining an army. I believe the eldest prince will not hold a grudge against her for not being able to make explosives.

Shen Yu thought proudly while taking a bath and enjoying the massage from his maid. He immediately felt that all the fatigue in his body disappeared.

After taking a comfortable hot bath, Shen Yu asked the maid to help her put on her nightgown and lie down on the bed.

When she was dozing off, a maidservant spoke in her ear.

“Miss Shen, the eldest prince is looking for you.”

"The eldest prince is here. Let him wait. I'm sleepy and want to take a nap first."

Shen Yu muttered something, turned over and continued to sleep.

The eldest prince walked to the bed and saw Shen Yu lying in bed with her legs spread out, without any demeanor of a rich lady. He frowned and a hint of disgust flashed in his eyes, but he concealed it in an instant. Instead, he bent down and blew into Shen Yu's ear.

Whether intentionally or unintentionally, Shen Yu turned over again, raised his hands, and hugged the eldest prince's neck.

Even though the eldest prince had seen countless women, he was still shocked by Shen Yu's boldness. However, he quickly responded to Shen Yu's teasing and no longer cared about anything else.