Western medicine and traditional Chinese medicine are fundamentally different, so Shu Ying combined the two and promoted both medical approaches according to the different conditions of patients.

The books were thick, and it would take a month to finish one. Shu Ying took out three of them, and then organized the rest. Some of the books were quite old, having been read by several generations. Shu Ying handled them very carefully, afraid that they would be torn up if she wasn't careful. These were the crystallization of wisdom, and she absolutely couldn't let them be destroyed in her hands.

While tidying up the bottom shelf, Shu Ying's eyes were drawn to a book without any cover.

She had no memory of this book. It looked very simple and didn't even have a publisher's mark on it. Shu Ying carefully put the book aside and picked it up gently.

"How come I never noticed this book before?"

She muttered to herself, reached out and turned to a page, and a subtle change appeared on her face when she saw what was inside.

To be precise, this is not a book, but more like a notebook, and its appearance here seems somewhat abrupt.

It contains records of the parents' other identities, a secret that has never been made public.

She carefully placed one hand over the photograph. The handwriting was strong and vigorous, and although the ink had faded somewhat with the passage of time, the content was still clearly visible.

From her grandparents' generation, both sets of parents were family friends. Her maternal grandfather and paternal grandfather met in their childhood and shared the same ideals. They remained friends until they got married and had children. Both families worked as underground telephone operators. Her maternal grandfather sacrificed his life while carrying out a mission.

Both families were large clans for generations. Under the guise of capitalists, they secretly raised a lot of funds and, under the cover of capitalists, supplied the organization with a large amount of weapons and medical supplies that were extremely scarce at the time.

The dates and details of each battle are clearly recorded, and there are even photos.

The horrific scenes on the battlefield and the transported supplies were documented in photographs. These items eventually came into her hands after decades. The more Shu Ying flipped through the photos, the more horrified she became.

No wonder the two families have always had such a good relationship; even setting aside their family history of friendship, they are comrades-in-arms who have gone through thick and thin together.

Shu Ying's tears fell uncontrollably. Suddenly, she understood why her ancestors had taken such a great risk.

At that time, the country was engulfed in war, and the assets of one or two families could have been easily transferred abroad. They would have continued to live a carefree life, and their descendants would not have had to endure the war.

But every citizen has a responsibility to the nation in peril. They couldn't let go of the hatred for the country's destruction. If they ran away, they wouldn't be able to stand up straight when their descendants asked.

They took a risk, even paying the price with their lives, but as it turns out, the two families made the right choice.

In such a difficult time, they made the right choice. The notebook contained the dates and names of their operations, as well as the numbers of their contacts at the time.

In addition, there was a piece of old newspaper that had been cut out.