Two more days later, Zhang Naijing took the first class cabin of the "Leviathan" cruise ship and traveled across the ocean to the United States.

Qin Di put aside his family affairs and took Yan Xue to Putuo Mountain for a meditation practice.

Yan Xue has good academic performance and there is no need to go to class every day.

Cultivators have strong spiritual consciousness and their learning efficiency is many times that of ordinary people. They can read twice a book and do not need to study step by step. Moreover, once they start cultivating, they can greatly reduce their sleep time. Like Qin Di, meditating for one hour a day is enough, while Yan Xue has to sleep for three hours.

To the north of Fayu Temple in Putuo Mountain, there is a two-in-one house with the plaque saying "Yangxinzhai" and surrounded by hundreds of acres of paddy fields.

After Qin Di took over the house from the Zhang family, he opened the maids in the house, leaving only one old servant to watch the door.

He found that the spiritual energy of Putuo Mountain is twice as strong as Nanhu Lake in Jiaxing, perhaps because it is in the sea or is exposed to the light of Guanyin Bodhisattva.

He taught Yan Xue's "Qingmu Art" and "Wullow Water Art". The Qingmu Art can absorb the spiritual energy from trees, flowers and plants, and the Wuwu Art can absorb spiritual energy from the rivers, rivers and seas.

Yan Xue has wood and water spirit roots, and with his careful guidance, he has made rapid progress.

Three months later, Qin Di advanced to the fifth level of Qi Refining! Yan Xue finally completed her breakthrough and entered the first level of Qi Refining! She started following Qin Di at the age of six or seven. After five years of cultivation, she finally cut off her hair and cleans her marrow and transformed her body!

At this time, Yan Xue was twelve years old, her figure was raised to 1.6 meters tall, her skin was white and red, as if it was a lotus from water, her eyes were as clear as autumn, and she had no flaws on her body, and she looked like a fairy in the sky.

Qin Di was very satisfied and felt that this apprentice was of good qualifications and worthy of training.

Although he treats Yan Xue as his disciple, he calls his name directly on weekdays.

Yan Xue called him "Mr." and would not call him "Master". Because this is a secular world, if you call him "Master", it will make people feel strange.

Afterwards, the two left Putuo Mountain and returned to the Qin Mansion of the Demon City.

Qin Ling and Qin Yue were both surprised to see Yan Xue again.

"Huh? Is this Yan Xue? Why is her skin getting more and more watery? What's going on? It's so enviable!"

"You are so beautiful, you will fascinate a lot of people when you go outside!"

"Stand with you, have I become a yellow-faced woman in the mirror?"

"Xiaoxue has grown up and this dress is not suitable. I will go out with my sister tomorrow and buy you some good clothes!"

Yan Xue smiled shyly, like a secluded orchid in the valley.

When Qin Hancheng returned home, he almost fell into shock after seeing Yan Xue!

"God! It's really a girl who has changed so much! I can't recognize her!"

Yan Xue smiled sweetly and said, "Uncle, no matter how it changes, I am a member of the Qin family."

Qin Hancheng felt aroused in his heart and said to himself: "My son is so sensible! He actually picked her out of all living beings five years ago! Now he is so beautiful that he can be used as a child bride! Haha..."

In the past, he always thought that Yan Xue was an outsider and didn't understand why his son brought such a young girl back from outside. Now he has figured it out! He couldn't help but smile happily.

Men are all visual animals. When looking at women, they first focus on their appearance, and knowledge and wealth are secondary.

Therefore, Qin and Han thought about it wrongly and thought that their son was very powerful.

After another half an hour, it was getting late and Zhu Wan entered the house.

She did not pay attention to Yan Xue's changes, but told Qin Di excitedly: "There is a breakthrough in the research on Penicillium! Two months ago, a 50-unit penicillium strain was screened out and a small amount of penicillium was obtained. I tried to use penicillium for clinical use and treated two patients. I found that its efficacy was amazing and much stronger than sulfonamide! It can be said that this is an epoch-making innovation! It is so exciting!"

Qin Di was also happy: "Is that so? This is good news!"

He discussed with his mother for a while and decided to apply for a patent immediately and could not postpone it for a few years like sulfonamide.

Historically, although Fleming discovered penicillin in 1928, he did not apply for a patent; in 1939, the Oxford team in the UK conducted an experiment to prove the effect of penicillin, and these people also did not apply for a patent. One of the important reasons is that they all have a strong spirit of dedication and believe that this drug that saves life and helps the wounded should belong to all mankind.

However, later, in 1945, the patent for penicillin was obtained by Americans at the forefront! Since then, if the whole world wants to produce penicillin, they have to pay patent fees to the United States. This shows that the difference in human realms is too big!

At this time, China's people's livelihood was in decline, and all walks of life were very backward, and they were bullied by foreign countries everywhere. It was not the great empire that year.

Qin Di felt that since he invested a lot of money to carry out this research, he could not hand over the patent to outsiders. In order to do something that is beneficial to the people, he must keep the patent in his hands!

The next morning, he went to Wallace, the dean of St. John's School of Law.

Just as Wallace was about to leave the Magic City and return to the United States, Qin Di talked to him, signed a series of agreements, and entrusted him with the patent application.

Wallace accepted it happily and agreed to do his best as last time.

Qin Di was not afraid of the other party stealing the patent, because the relevant paper has not been published yet, and the patent application only prepares penicillin, and does not describe the effect of penicillin and how to upgrade Penicillin.

High yields of Penicillium strains are not easy to obtain. It will take several years to find a suitable strain.

Qin Di held Wallace's signature commitment letter in his hand and detailed experimental records from many scientific researchers. Even if he was registered, he could still be resolved by lawsuits.

In fact, a foreigner like Wallace who has been teaching in China for more than ten years and is still a credible foreigner. As a lawyer, he must have professional ethics.

Wallace took a sum of money, took his wife and children, and happily left in the first class of the ship.

Subsequently, the upgrade of Penicillium continues, and researchers continue to irradiate ultraviolet light, hoping to obtain a strain with higher yields.

The bacteria are cultured in a shaker and divide very quickly. They can be screened once a day. After repeated screening, the strains continue to upgrade.

Qin Di’s goal is more than 5,000 units, because the higher the strain level, the less raw materials are used to prepare penicillin.

To cultivate Penicillium, you must first have a culture medium.

The culture medium is prepared with grain and chemical elements are also added.

In the past few years, China has been famine. From 1920 to 1921, there were great famines in the four provinces of North China. In the next few years, there will be more famines! In 1925, there were great famines in five provinces of Sichuan, Guizhou, Hubei, Hunan and Jiangxi. From 1930 to 1932, there were great famines in the eight provinces of the north. In any case, saving some food is always a good thing.
Chapter completed!