The person on the city wall who could still open his eyes immediately took out his bow and arrows and shot wildly, and when the arrow rain fell, Jiang Heng had already returned to Bai Yunyi's side.

This time, the white light bloomed even more dazzlingly, but Bai Yun didn't dare to look at it, and when she opened her eyes again, her eldest brother had already taken the lead and rushed over with 20,000 men and horses from the military camp.

The large hole in the melting of the Xuantie City Gate was enough for several people to rush in at the same time.

There were only 10,000 defenders inside, and those near the gates were either dead in the heat of the thermite reaction or blind, and were no match for them at all.

It will take time for the men and horses on the walls to come down.

By the time they came down, the people around Bai Wenbo had already opened the city gate.

The win of this stop is decided!

Bai Yunyi had a smile on her face, and hurriedly asked Jiang Heng and the female guards to protect her and retreat.

She didn't want to see that kind of brutal image of slashing with swords and constantly dying.

Bai Yunyi is indeed not a great talent in his last life, but he is absolutely serious in his studies and work, and as a student of chemical engineering, getting some thermite is just a trivial matter.

Merely...... It's still enough to get it out on a large scale, and she had to stay up for three whole days for this before, and this was done with the help of many people to help find the materials she needed, otherwise it would be absolutely impossible.

The temperature produced by the burning of thermite can reach up to 2,000 degrees Celsius, and it is very easy to melt the gate of the dark iron pour, which was specially used for welding in the era of her previous life.

When I was in college, they also did thermite reaction tests, which can be described as familiar.

After withdrawing from the range of the battlefield, Bai Yunyi breathed a sigh of relief.

"Jiang Heng, do me a favor." Bai Yun turned his head to look at Jiang Heng on the side, and said with a smile.

In fact, she never treated Jiang Heng as her subordinate.

Jiang Heng's martial arts are too high, and she is from an extraordinary background at a glance, if she didn't have any life experience and ran away from home, it would not have been her turn to pick up this treasure.

"What's the busy?" Jiang Heng turned his head to look at Bai Yunyi and asked with a smile.

As a martial arts genius, although Jiang Heng's EQ is very low, his IQ is particularly high, and after witnessing the miracle created by Bai Yunyi, Jiang Heng looked at Bai Yun for a while, with admiration in his eyes.

Anyway, with his skills, he would never be able to make such a thing.

As a grandmaster, he has strong martial arts, but the big iron gate weighs at least more than 100,000 catties, and with his ability, he will never be able to shake it open, but what Bai Yun got out melted the iron gate.

The strength of a person does not depend on how strong your martial arts are, in Jiang Heng's view, wisdom really determines everything.

When Bai Yunyi asked him to help with other experiments before, just a small amount of powder poisoned a large piece of fish.

It's horrible.

What is that?

Highly toxic hydrides.

It was something that Bai Yunyi had prepared when she went south to Baisha City before, and she didn't use it at the time, so she used it here as a secret weapon.

If she has her own thermite to melt down the big iron gate and still can't take Eagle City, then don't blame her for being ruthless and poisoning.

If it is not my race, its heart will be different, and the three princesses will be bullied by others, and they will be bullied, of course Bai Yunyi can't bear it.

Although she didn't want to kill, when it was absolutely necessary, in order to save her own people, she could only let others die.

She's not a savior, so she can't care so much.