The two big men forced her to eat more, but Olivia could only manage a few bites before she wrinkled her nose and said she couldn't eat anymore. Jackson had no choice but to take away the cold fried rice that was left.

Olivia breathed a sigh of relief.

It was already completely dark outside, and Jackson found a candle and lit it, making it the only source of light in the dark room.

"Rest for a bit, we'll go to the rooftop later," Jackson took out the steel shovel and a dagger, wiped them both with a cloth, and then handed the dagger to Olivia with great solemnity.

Olivia approached the dagger, which was much sharper than the kitchen knife she had used before.

"I sharpened this dagger, it's very sharp, so be careful when you use it and don't hurt yourself," Jackson reminded Olivia.

Olivia nodded and murmured softly, then looked at Harry and felt that she couldn't neglect him, so she also took the hammer she had given him.

The three of them rested for a while, having just eaten, it was not suitable for intense exercise.

Jackson looked at the clock on the wall, which pointed to 7 o'clock, and estimated that they had rested enough, so he blew out the candle on the table and said, "Let's go."

He held the steel shovel in one hand and opened the door with the other.

Olivia followed him, and Harry walked at the back with an iron rod.

After that, the three of them dragged the Zombie corpse that had been left on the corridor before, and walked towards the rooftop along the stairs.

Jackson led the way in front, climbing up the stairs to the rooftop, and Harry saw a lot of corpses piled up on the spacious rooftop.

Obviously, in the past few days, most of the corpses of the Spiritual Source beasts that Jackson had killed had been moved up to the rooftop. Harry saw at least twenty or thirty corpses, mostly low-level Zombies, and a few Water Rat Beasts. The most eye-catching was a giant Water Rat Beast, several times larger than the ordinary Water Rat Beast.

Harry took a glance and knew that it must be the water rat king evolved from the Water Rat Beast, an elite Spiritual Source beast. Jackson's "Soul Devourer" was the special ability he obtained by killing the water rat king.

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"The moon is big and round tonight," Jackson looked up at the sky. Although it was already night, the moon in the sky was emitting a soft moonlight, so it was not too dark under the night sky. At least they could see each other's blurred figures clearly.

"They say the moon on the fifteenth day is rounder, but today is the seventeenth, and the moon is not bad," Harry also looked up at the sky. He saw Jackson grab a Zombie corpse and walk to the edge of the rooftop, then suddenly used both arms to throw the two corpses down.

Harry leaned out slightly and saw four thick ropes hanging down from the edge of the rooftop, one end fixed on the rooftop and the other end all hanging into the water.

"What are these ropes for?" Harry asked.

"You'll see later," Jackson replied as he threw two more Zombie corpses down.

Harry listened and did not continue to ask. He saw Jackson throw down eight corpses one after another, then stop and say, "Throwing eight corpses down at once might alarm them. Let's wait for them to come up here."

Harry asked, "You used this method to lure these monsters and killed them before?"

"Yes, but it's hard to grasp the balance. If we throw too few corpses, the effect is not obvious. If we throw too many, it's easy to attract terrible monsters, like this giant water rat. At that time, we didn't understand and threw all the corpses down, which resulted in attracting this big guy and nearly killing us. I was lucky to have killed it and survived," Jackson said with lingering fear.

Harry nodded silently. He understood that this method was indeed good. They could use these corpses as bait, fix them to a certain time when they were fully prepared, and lure these Spiritual Source beasts out to hunt them. After that, the probability of these Spiritual Source beasts appearing at other times would be much lower.

He looked down and saw that the water below was starting to ripple. Soon, black figures appeared.

"If we don't throw the corpses down, will they not appear?" Harry asked Jackson in a low voice. He realized that even though he had not thrown any corpses into the water in the past two days, Spiritual Source beasts still appeared from time to time, indicating that the appearance of Spiritual Source beasts was not absolutely related to throwing corpses into the water.

"No, even if we don't throw corpses down, they will still appear. But their appearance is random and full of uncertainty, which is not good for us and requires us to be on guard for a long time. By throwing the corpses down at once, we can make them appear at a certain time and place, making it easier for us to hunt them. After they appear at this time, the probability and quantity of appearing at other times will be much lower," Jackson explained while staring at the movement below.

Harry understood and nodded slightly. This method was indeed good. They could use these corpses as bait, lure these Spiritual Source beasts out, and hunt them when they were fully prepared. After that, the probability of these Spiritual Source beasts appearing at other times would be much lower.

He saw figures emerging from the water and climbing up the ropes. These Zombies were not slow, and soon appeared in front of the three of them.

Jackson did not rush to attack, fearing that they would be knocked down. Instead, he let them climb up to the rooftop, and then waved his steel shovel and attacked suddenly.