Tang Dynasty: Father, if you don't rebel, I will!

This wasn't Songtsen Gampo's first visit to Chang'an.

In fact, this wasn't the first time he had come to Chang'an in a prison cart.

However, the last time he came, not only him, but also all the civil and military officials around him were imprisoned in prison carts and escorted into Chang'an as bandits.

Now, Songtsen Gampo is accompanied by a large group of Tibetan dignitaries, including Grand Minister Thonmi Sambhota, Foreign Minister Gar Tongtsen, and many Tibetan generals, all of whom are participating in the trial against him as witnesses.

"boom!"

The convoy entered Zhuque Avenue.

On both sides, many Tang Dynasty citizens pointed and whispered about Songtsen Gampo in the prison cart. What almost made him vomit blood was that he also saw many merchants in the crowd, dressed obviously as Tibetans, who were also cursing him with contempt and disgust.

Just as he was breathing heavily, about to open his mouth and rebuke these people for being unruly and disrespectful,

Suddenly, a sound like an explosion was heard, accompanied by a flash of bright light.

His expression changed drastically in surprise.

He turned his head in horror and saw two people in front of the convoy, their heads covered by black cloth, holding a strange thing with a support. One of them was holding a metal object that looked like a ladle.

At that moment, a wisp of white smoke was still rising from the ladle.

Before he could figure out what these Tang people were doing, a loud "bang" came from the other side of the prison cart.

"What are you doing? What do you want to do? Kill me or torture me, do whatever you want, but how dare you humiliate me like this?!"

Songtsen Gampo shouted a rebuke.

He vaguely heard things like "bad angle" and "not clear in the photo," which he couldn't understand.

Behind the procession, Thonmi Sambhuja and others, along with representatives from the Niva Kingdom, Xiangxiong Kingdom, Dongnu Kingdom, and Tangut tribes, also saw the Tang people using that strange thing to "bang bang bang" at them.

The crowd was puzzled, and their bodies, which were on horseback, became noticeably stiffer.

Meanwhile, Murong Shun, the Prince of Da Ning, who was leading the group at the front, was dressed in bright armor and had a solemn appearance. When facing the cameras, he always managed to strike a pose that looked quite good from every angle.

This drew high praise from the young cameramen who came from imperial universities and government schools.

Thonmi Sambhuza asked the Foreign Minister Galdonzan, who had long served as an envoy in Chang'an, with a puzzled expression.

The latter looked at the novel gadget that had only recently appeared with a complicated expression.

Sigh.

"That thing is called a camera. It can capture the image of a scene on a photograph, like a realistic painting... The resulting image is lifelike."

As he spoke, Gardonzan couldn't help but shake his head and sigh again.

While he was in Chang'an, it was not easy for him to convey many things to Songtsen Gampo in India. Sometimes the nature of the matter would change, and the corresponding countermeasures would also need to be changed.

But he never expected that Tibet would lose its mind in the face of such a vast and expansive land.

If we were to slightly encroach upon some of Harsha's territory and establish a larger colony, the Tang Crown Prince would surely turn a blind eye, considering the usefulness of Tibet over the years.

But... they occupied the entire central part of India, and even went head-to-head with the southern kingdom of Chalukya.

This is a completely different matter.

He glanced sadly at his own king in the prison van ahead, who was like a panicked caged beast, constantly shielding himself from the blinding light of the momentary exposure.

Let alone what Tibet will become in the future, we don't even know if Tibet will still exist.

That remains to be seen...

"Brother, all you need to do is heat sulfur and saltpeter here, then mix the resulting gas with water vapor and pour it into this lead chamber. Once it cools, a substance will be created that can corrode everything!"

In the palace, Prince Wei, Li Tai, wore a mask and a white coat.

Standing in front of a table, like a teacher giving a lecture, she proudly explained to Crown Prince Li Chengqian, Empress Zhangsun, and her younger siblings what to do with their lives.

He picked up a bottle containing a clear liquid with his gloved hands.

Under the watchful eyes of many, he opened it and then gently poured it onto a patch of cotton in the glass jar in front of him.

"laugh......"

Seeing the cotton that had been splashed with "water" but instantly turned black and twisted as if it had been scorched, emitting a pungent odor, the princesses of Xiangcheng and Changle stared in astonishment.

Li Tai was even more pleased with himself and couldn't help but look at his elder brother, the emperor, as if seeking credit.

"Brother, if we mass-produce this, when facing the enemy, we only need to use catapults to throw it into their ranks. As it scatters everywhere, there will surely be a chorus of screams..."

Li Chengqian: "......"

He had just finished praising his clever younger brother for developing the lead chamber method for preparing sulfuric acid through his own research and deduction, but before he could even praise him, he heard about the guy's plans for using sulfuric acid.

His lips twitched involuntarily, and he didn't know what to say.

The idea is good, and it is indeed feasible to some extent.

but.....

"Ahem, Qingque, this is a very good item. However, I think you could continue your research on this basis and perhaps you could develop some new items that could benefit all people."

Li Tai looked at the "Netherworld Water" in his hand, and his elder brother's reaction made him feel a strange sense of loss.

"Isn't fighting on the battlefield also a way to benefit all people?"

Li Chengqian: "..."

Is there really no way I can correct you into a true scientist?

He didn't believe it. Taking a deep breath, Li Chengqian pretended to ponder.

“Qingque, since this substance is made from sulfur and saltpeter, and saltpeter is readily available near latrines, and nowadays people often use compost in their fields, there may be some similarities between them. I think that perhaps you can research this substance to create a fertilizer that is even better than compost, which would be a blessing for all people.”

His face wore a majestic and righteous encouraging smile, like a saint who was about to pull Li Tai, a child who had gone down the path of no return, back to the right path.

Li Tai's eyes brightened slightly, but then he gave a weak and feeble "oh".

Oh?

I think this thing of yours could be used to make fertilizer, and all you give me is... oh? ??

Beside her, Empress Zhangsun remained silent, holding the young Crown Prince Li Yutong in her arms, smiling gently as she watched the harmonious scene between the brothers.

Seeing that Li Tai casually tossed the concentrated sulfuric acid onto the table and had his subordinates from the Heavenly Crafts Bureau clean up the scene, it seemed he was about to head back to find something new that interested him to study.

Li Chengqian finally couldn't sit still any longer.

"Wait, wait! Qingque, I've suddenly thought of a possibility!"

Li Tai turned around and looked at his disappointing elder brother.

Li Chengqian considered his words carefully before speaking softly.

"Sulfur and saltpeter are also important raw materials for making gunpowder, right? So what you made, um... let's call it sulfuric acid, can this also be used to make gunpowder? More powerful gunpowder?!"

"Oh!!!"

Li Tai's mouth opened wide into a huge "O" shape, and his eyes widened instantly.

The initial enthusiasm, which had been dampened, surged back like a blazing fire.

More powerful gunpowder!?

Li Tai recalled what his elder brother, the emperor, had said about cannons that could potentially hit targets more than ten miles away.

In an instant, sulfuric acid, the mother of industry, which he had just categorized as "useless," once again gained the favor of this Prince Wei.

Watching the other party leave in a hurry, Li Chengqian stood with his hands behind his back and couldn't help but let out a long sigh.

"Mother, what should we do if Qingque causes trouble that even I, his elder brother, can't handle?"