Those who reincarnate must die.

Under repeated attacks from gunpowder weapons, these insects died in droves. Apart from a small number of flying insect troops and a few purple-gold war insects, the main force did not even have a chance to get close to the city wall!

The flying insects were mostly shot down by the catapult's shrapnel, and those few war insects, despite their great effort to climb up the city wall, could not escape Zhang Lang's slaughtering broadsword!

It wasn't that the insects were too weak; it was simply that gunpowder weapons were far ahead of their time!

Although gunpowder was invented in the real world thousands of years ago, the ancients could only figure out its formula through experience. For a considerable period, the gunpowder formula was not perfect, and it was only through countless trials and centuries of development that the optimal ratio was finally found.

However, the gunpowder used in Sunset Fortress is now based on the theoretical optimal ratio that Cheng Xue deduced from chemical equations. Although there is still some error, it is already very close to the actual optimal ratio!

This ratio, discovered only in modern times in the real world, is far more powerful than the traditional homemade gunpowder used in ancient times to make cannons, divine fire flying crows, and muskets! Although it cannot compare to the later yellow explosive TNT, it is more than enough to deal with flesh-and-blood insect monsters!

To make a long story short, after nearly half an hour of relentless suicide attacks, the swarm seemed to realize something was wrong. All the insects suddenly turned around and decisively retreated, leaving behind only scorched earth and countless mangled insect corpses outside the city walls...

"Ohhhh!!!"

Watching the retreating swarm of insects, the soldiers cheered thunderously. They had succeeded! They had truly defeated those bugs and avenged their comrades!

Although there were occasional instances of gunpowder weapons being mishandled and injuring soldiers during the battle, these injuries were negligible compared to the number of insects killed. This ratio of enemy casualties to friendly casualties was an unprecedented victory!

After a brief celebration, the soldiers did not relax. Those guarding the city walls continued to hold their posts and took turns resting. Those who still had energy devoted themselves to the production of gunpowder weapons.

Later, the insects attacked twice more, but each time they were repelled before they could even reach the city walls. This back-and-forth fighting continued until sunset. The soldiers breathed a sigh of relief; they had survived another day!

On the third night, everyone didn't have to stay up all night like the previous day, since they still had to fight during the day. No one could handle such continuous high-intensity work. Soldiers and craftsmen took turns resting, but even with sufficient sleep, they didn't slack off on weapon production.

The breach in the city wall was further repaired and became even more sturdy, so it no longer needed Zhang Lang to guard it.

As for the reincarnators, they were all overjoyed to hear about the battle situation on the city walls, believing that they had found a way to pass the level. As long as they had gunpowder weapons, surviving six days would not be a problem!

Everyone relaxed, especially the newlyweds. Bored, they even made their own deck of cards out of scrap paper and hid in the castle to play cards.

"Killing bugs is much easier now, and you don't have to hide in the castle all the time!"

Fang Tianhua glanced at the newcomers who were getting too relaxed as soon as they felt comfortable, and reminded them:

"If you have time, go up to the city wall and operate the ballistae or catapults. Kill a few bugs; you can earn a lot of points!"

Fang Tianhua's suggestion was well-intentioned, but the newlyweds were particularly resistant to it.

Having witnessed the insect monsters killing people, they had developed an instinctive fear of those monsters. Even knowing that the veteran's words were true, they were unwilling to risk leaving the castle again.

As for the score, as long as you survive this time, you'll have plenty of opportunities to earn it later. But if you die this time, then it's all over!

However, they were happy to contribute ideas and suggestions, joining the craftsmen and providing them with ingenious ideas about gunpowder weapons. Of course, most of these ideas came from the fancy firecrackers set off during the Lunar New Year…

As the sun rose, the Reincarnators entered the fourth day of their mission.

On this day, apart from Zhang Lang and a few veterans who came to the city walls, the newcomers still lacked the courage and mostly remained in the castle.

"If we'd known it was this easy to rack up points, we should have operated those catapults on day one!"

Touching the cold crossbow, Liu Mofei had a sudden inspiration:

"By now, you must have killed quite a few bugs and earned a lot of points!"

"It's not that easy!" Fang Tianhua shook his head. "There's a method to killing monsters, and sometimes, even if you kill a monster, you won't get any points!"

"Why is that?" Liu Mofei asked, puzzled.

"Let me give you an example!" Fang Tianhua explained, "If you're fighting someone on a cliff top and accidentally knock over a rock, which then falls off the cliff and kills a passing monster, what happens to that monster?"

"Uh..." The group was stunned by what Fang Tianhua said.

"This is just a simple example!"

Fang Tianhua continued:

"Our every move can have a butterfly effect, indirectly causing the deaths of many people or monsters. These deaths won't all be credited to us. There's another scenario: using powerful weapons, like pressing the nuclear button, can cause the deaths of monsters in an entire city. Although you killed all those monsters, you won't get any kill points."

Liu Mofei complained, "How can this be? What's the point of exchanging for those powerful weapons then? We don't even get any points for killing monsters!"

Fang Tianhua shook his head and said, "The weapons we possess are unrestricted, and based on my experience, the altar's decision on whether to award points isn't strictly based on the weapon's power. It's more about the difficulty the reincarnator faces during the kill. Anyone can press the bomb button, but piloting a fighter jet, while incredibly powerful, is very difficult to control, so you'll generally still get points!"

"I understand!" Shang Xue said, "Whether you get kill points depends on how much help you receive from the quest world when you kill this monster. The more help the quest world provides, the less likely you are to get points; the more effort you put in yourself, the more points you'll get!"

"Excellent summary!" Fang Tianhua nodded. "So, this ballista requires accurate aiming and has relatively low lethality, so it should score points. As for the large catapult, its range is already adjusted; you just need to cut the rope to fire, so I estimate its chances of scoring points are low!"

Hearing this from the side, Zhang Lang's heart stirred slightly, and he asked Xu, "There are such hidden rules?"

Xu replied, "Indeed... but you don't really need to worry. I'll tell you when you get points and when you don't! Besides, your two hands are more useful than anything else, why would you need to rely on those things?"

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