Upon learning that his master had arrived, Zhang Jian hurried out of the 101 laboratory to greet him. With him came a man in his twenties. Although the two looked very different, they had similar temperaments, both of them were very calm and reserved.

He was Zhang Jian's brother-in-law, Wang Yingxuan, a private school teacher from Shaanxi.

Although Zhao Hao took great pains to bring Wang Xiucai from Shaanxi for the sake of his unborn son Wang Zheng, Wang Xiucai was proficient in arithmetic, astronomy, mechanics and geography, and had an unusually high scientific talent.

This is not surprising, because it was under the guidance of his brother-in-law that Zhang Jian developed a keen interest in mechanical physics.

Zhao Hao naturally couldn't just keep this kind of talent for breeding, he also wanted him to shine. He hired him as the director of the 01 Iron and Steel Research Institute with a high salary.

"Hello, Brother Wang." Zhao Hao accepted his apprentice's kneeling greeting with a smile, and then became friends with his apprentice's brother-in-law.

Wang Yingxuan was wearing a pair of thick glasses for myopia, which he had worn after coming to Jiangnan. He had been unable to continue his studies because of his severe myopia, but he never expected that a pair of small glasses could cure the chronic disease that ruined his future.

After putting on the glasses, he actually wanted to continue studying. After all, he was only in his early twenties and it would not be a problem for him to pass the imperial examination in Shaanxi.

But old Qin was grateful and wanted to repay his kindness, so Wang Yingxuan didn't say anything and plunged into the ravine of Chenjiawu.

Zhao Hao liked this kind of honest man who was easy to bully, so he was very polite to him.

Wang Xiucai, who attached great importance to ethics, was not used to being called "big brother" by his brother-in-law's master. However, he was honest and loyal, and he would not say anything more.

"Brother Wang, is there any movement in my sister-in-law's stomach?" Zhao Hao's next sentence almost ruined his plan.

"Ahem!" Mr. Wang's face flushed red, and he shook his head awkwardly, "Not yet."

"You need to work harder." Zhao Hao said with a smile, "Try to have more children, so that you can have more branches in Jiangnan."

"Hey, hey..." Wang Yingxuan nodded blankly. He couldn't figure out why the young master would always ask his wife if she was pregnant every time they met.

Fortunately, at this time, the director of Institute 02, Xing Yunlu, also heard the noise, and he and his junior fellow student Qu Rukui hurried out of Laboratory 201 to meet the teacher.

Xing Yunlu was a student brought by Zhao Hao from Beijing. This immature astronomer showed a strong interest in science. Zhao Hao was really short of manpower, so he asked him to come to the center's mineral research institute for a few years.

As for Qu Rukui, everyone must be even more unfamiliar with him, because he had never been mentioned before... It's really that Mr. Zhao's business is getting bigger and bigger now,

I can't go into every detail.

It's not something that needs to be added at the last minute... Seriously.

The Qu family was a prominent family in Changshu. Qu Rukui's father, Qu Jingchun, was the top scorer and second runner-up in the imperial examination in the 23rd year of the Jiajing reign. He was the chief editor of the Yongle Encyclopedia and served as the Left Vice Minister of the Ministry of Rites and a Hanlin scholar. However, he retired due to illness and returned to his hometown to live in seclusion.

Qu Rukui is the second son of Qu Jingchun, 19 years old this year, studying at Suzhou Prefecture School. Unfortunately, he was poisoned by Li Jiaoshou, deceived... oh no, introduced to Kunshan, where he worshipped Zhao Hao as a teacher and studied science.

And I am very honored to be promoted directly from a fifth-level science student to a fourth-level 'registered disciple' along with Xing Yunlu, and I can call Mr. Zhao "Master".

Considering Mr. Zhao's snobbishness, he was willing to make an exception and accept a disciple. Of course, it was because this person, like Xing Yunlu, was extraordinary.

In another time and space, this young man with many strokes in his name was a nobleman of Matteo Ricci after he came to the Ming Dynasty. It was he who guided Matteo Ricci, who was deceived into becoming a monk, to wear Confucian robes, study Confucian classics, and interact with scholars and officials. This time, Matteo Ricci's missionary career took a turn for the better.

He was also the first scholar-official in the Ming Dynasty to be fascinated by Western learning. Everything Matteo Ricci said had a great appeal to him. He studied diligently with Matteo Ricci for a year and learned mathematics, spherical geometry, and the first volume of Geometry Elements.

I also learned how to make various sundials, how to measure height and distance, and learned Italian by the way...

He learned all these in one year. He is definitely a genius.

Unfortunately, his reputation was damaged due to an emotional dispute, and he suddenly disappeared from the world and has been missing since. He did not leave a great name in the history of science like Xu Guangqi and Wang Zheng.

Zhao Hao was eager to recruit scientific geniuses, and even the underage Xu Guangqi was not spared, not to mention the adult Qu Rukui. After learning that Xu Guangqi was studying at Suzhou Prefecture School, Zhao Hao asked Li Zhi to help recruit him.

However, Zhao Hao has high expectations for him. Currently, he is only letting him catch up on his scientific knowledge and has not assigned him any specific work.

~~

Zhang Jian, Zhao Shizhen, Wang Yingxuan, Xing Yunlu, and Qu Rukui are the five great masters of the entire research center. The rest are just skilled craftsmen who can barely read...

Zhao Hao launched a surprise attack today, and his disciples had no idea what he was going to do.

After the greetings, I asked the master for any instructions.

Mr. Zhao thought to himself that I just don't want to go hunting, so he smiled and said, "Don't be nervous, I'm just here to take a look."

He glanced at Xing Yunlu and said, "Let's go to your place first."

"Master, please." Xing Yunlu's expression tensed and he quickly stepped aside to lead the way.

Everyone entered Laboratory 201 and saw that all the tables and chairs in the room were piled in a corner, and the empty ground was filled with bags of sand.

Several craftsmen poured several bags of sand with the same label evenly onto a straw mat, which was then covered with a snow-white sheet.

Then each craftsman picked up a fine-toothed bamboo rake and plowed the white sand on the straw mat continuously.

Zhao Hao squatted down and took a closer look, and saw that a long, thin black stone was tied to the teeth of each rake. The stone constantly sucked out some black and brown powder from the white sand.

"Are you removing iron from quartz sand?" Zhao Hao asked with a smile.

"Hehe, nothing can be hidden from Master." Xing Yunlu nodded with a smile:

"My master told me last time that the yellowish-green opacity of glass is mainly caused by the iron impurities in the quartz sand. After I came back, I thought of this solution."

"Well, how is the glass fired now?" Zhao Hao nodded. Xing Yunlu's biggest weakness is that he is very serious, which makes him particularly suitable for this job.

"The progress is still obvious." Xing Yunlu asked someone to bring the wooden shelf from the corner over.

There are nine pieces of glass of different colors inlaid side by side on it. The yellow-green color on the far left is the darkest, and the color becomes lighter as you go to the right.

Each piece of glass is labeled with test data such as the source of the material, firing time, furnace flame color, etc.

It is completely in line with the scientific experimental method taught by Zhao Hao, which makes the teacher feel deeply gratified.

ps. The third update, please give me your monthly votes, it will be gone tonight.