For instance, in ancient times, sword handles were generally made of mulberry or jujube wood, while spear shafts were made of zhe wood.

The weapons equipped by elite troops might be slightly better, as they would be repeatedly soaked in oil during manufacturing, making them comparatively less abrasive to the hands.

But ordinary troops were not so fortunate.

Their weapons were basically just coated with raw lacquer on the outside and didn't involve any polishing or waxing; if they were unlucky, they could easily get splinters.

Therefore, the wear and tear on the palms and the webbing between the thumb and forefinger was very common throughout various dynasties and even affected many battles.

But if only they could apply silver chrysanthemum glue on the gripping parts....

As long as it was applied correctly, it could protect the palm without slipping.

Frankly speaking,

if such weapons could be widely used in the long term, the winning rate in ground battles could probably increase by at least ten percent!

A seemingly insignificant item can boost combat effectiveness by one-tenth, which is already a terrifying figure.

Of course,

Considering that silver chrysanthemum glue could not be mass-produced yet, Old Zhong and Xiaozhao's ideas were just potential materials, still far from practical application.

Afterward, Xiaozhao left Su Qi and Old Zhong on site, while he himself took Xu Yun out for a casual stroll through the Artifact Bureau:

"Mr. Wang, I wonder what the current production progress of the airplane is?"

Upon hearing this, Xu Yun took a piece of paper from his sleeve, unfolded it, and said:

"Your Highness, this is the progress chart of each department; the airplane is currently about eighty percent complete."

"Eighty percent?"

Xiaozhao raised an eyebrow with slight surprise; Xu Yun's reply was somewhat unexpected for him:

"Isn't this much faster than planned?"

Xu Yun chuckled; it was clear that he was quite satisfied with the progress:

"It's about twenty percent faster, thanks to the statistical group's efficiency being much higher than anticipated."

"Additionally, that donkey has been working very hard, grinding for ten hours a day."

Xiaozhao nodded in satisfaction, then thought of something and turned to Xu Yun:

"By the way, has Miss Li still not seen you?"

At the mention of Xiaoli's name, a complex expression flashed in Xu Yun's eyes.

During the coup that he led earlier,

he felt he didn't owe Xiaozhao, Old Zhong, Wang Bing, or even Zhao Ji any apologies.

After all, in the normal course of history, this guy directly led to the downfall of the Great Song, being among the biggest culprits.

Might as well topple him from the imperial throne in this lifetime; Xu Yun felt justified.

Thus, there were just two people who truly made him feel guilty.

One was Old Su.

Without a way to let Old Su personally witness the original timeline, Old Su was destined never to escape his own moral condemnation.

He would constantly question and blame himself, doubting the correctness of his actions, right up till the end of his life.

The second was Xiaoli.

Although Xiaoli didn't know the whole story yet, the reason Old Li was imprisoned was plain:

Under the base of the microscope's secret compartment, Zhao Ji's name and birth date were found.

As someone who had often used the microscope at Old Su's mansion,

Xiaoli, how could she not know that there wouldn't normally be a secret compartment under a microscope's base?

Additionally, by analyzing the subsequent events, Xiaoli could easily conclude:

Old Li was trapped and imprisoned by Xu Yun.

Although Old Li suffered little harm during the entire process and was eventually released.

Nonetheless, this was a psychological barrier for Xiaoli.

Therefore, after the whole incident was over,

Xiaoli no longer attended lectures at the mansion and rejected multiple visits from Xu Yun.

However,

she did take the microscope back to the Li Mansion once she learned that Old Li was unharmed — claiming it was a legal transaction as it was paid for by her.

At the same time, Xiaozhao also 'suddenly' became curious about biology,

often asking Xu Yun questions on biological topics and sometimes having Xu Yun write them down, matters not for outsiders to know.

But ultimately, they could not meet...

Then Xu Yun paused, took out a three-to-four-centimeter-thick book from his person, and handed it to Xiaozhao:

"Xiaozhao, if it's convenient, please hand this book over to Miss Li."

Xiaozhao took the book, flipped through a few pages, and asked:

"Mr. Wang, the book seems to be all about biology?"

Xu Yun nodded and replied:

"Correct, it mainly contains knowledge on microbiology, records from the Wind Spirit Moon Shadow Sect, which should interest Miss Li greatly."

Xiaozhao closed the book, looked at Xu Yun with some confusion, and asked:

"Mr. Wang, Miss Li doesn't actually hold a grudge against you; it's just a matter of coming to terms with things in her heart, as you say."

"In a few months, once the situation stabilizes, with me as the mediator, the three of us can go out for a trip, and the gap will naturally close."

"Then, wouldn't it be better to give her the book at that time?"

Xu Yun remained silent for a long time, then shook his head with a complicated expression, persisting:

"Your Highness, please let the book be handed over by you."

With that said, he sighed slightly in his heart:

My time in this world is becoming scarce...

.........

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