Fang Qing scratched her head, unsure how to answer for a moment.

She hadn't noticed this problem either.

"Firearms are humanity's last line of defense."

At this time.

Nan Yao walked over expressionlessly.

Su Bai understood what she meant.

Like humans, the demon race is an intelligent race.

Once the human race uses thermal weapons...nuclear weapons on the battlefield.

It's not impossible for the demon race to emulate and learn from them.

After the spiritual energy revived, they were blessed by heaven and earth, not only possessing strong physical bodies but also various innate supernatural abilities, making them extraordinary.

Given the sheer number of demons, if they were to acquire firearms and nuclear weapons, it would be a devastating blow to humanity.

"Moreover, human warriors and demon emperors above the Qiongyu Realm are not afraid of thermal weapons or nuclear weapons."

Nan Yao glanced at the sword technique "Autumn Water" and then turned to leave.

But when he passed by Su Bai, he couldn't help but stop in his tracks.

"Let me take a look at your sword."

With a thought, Su Bai drew the Zhuxian Sword, which hovered steadily in front of Nan Yao.

The opponent possesses an A-level talent and is a sword fanatic, so he can naturally sense the extraordinary nature of the Zhuxian Sword.

"A fine sword, it's a pity it's broken."

Nan Yao examined it carefully for a moment, then turned and went downstairs without taking the sword.

Su Bai also wanted to know why Nan Yao said that the strong above the Qiongyu Realm would not be afraid of thermal weapons, or even nuclear weapons, which are devastating weapons.

However, the other party clearly didn't want to talk about it, and he wasn't the type to be overly curious.

call out!

With a thought, the longsword returned to its sheath.

After exchanging for "Autumn Water" and some healing potions and ten bottles of Breath-Concealing Water, Su Bai returned to the garrison room.

clatter.

The Chang'an Merit Ring lit up, and a string of numbers appeared: 501, 312.

clatter.

The number changed to: 129.

After turning off the merit ring, Su Bai took out the sword technique "Autumn Water".

The blue light screen, with its standard technological style, is a means for modern humans to record important information, with the aim of preventing the demon race from stealing it.

Su Bai reached out and sensed his merit ring. The blue light screen spread out and transformed into a light screen, on which was recorded the cultivation method of the sword technique "Autumn Water".

"Starting with the sword, gathering spiritual energy, one transforms into three thousand..."

Stationed indoors.

Holding the Immortal Execution Sword, Su Bai began his cultivation, referring to the incantation.

With the pure sword heart empowerment, he quickly mastered the sword technique.

[Ding! The host has learned the A-rank area-of-effect sword skill "Autumn Water". The current proficiency level is 1/100 (beginner). Points can be added!]

"Add 100 points."

[Ding! Skill point allocation complete. Current proficiency level of the A-rank area-of-effect sword skill "Autumn Water" is 1/500!]

"Add 500 points."

[Ding! Skill point allocation complete. Current proficiency level of the A-rank area-of-effect sword skill "Autumn Water" is 1/2000!]

"Add 2000 points."

[Ding! Skill point allocation complete. Current proficiency level of the A-rank area-of-effect sword skill "Autumn Water" is Master 1/5000!]

There are seven proficiency levels in total, above Master, there are Grandmaster, Transcendent, and Supreme.

Su Bai did not add any more points. His mastery of "Autumn Water" was already equivalent to a minor perfection.

Further development involves more refined aspects, such as shortening the sword-drawing time and precisely controlling the sword's edge.

These situations can all be improved with more repeated use, so there's no need to rush.

He needs to accumulate attribute points now.

"Open your personal attributes panel."

[Ding! Host, please look at the big screen!]

[...]