Xu Yi bent over and walked forward in the tunnel. It was only one meter high and could not stand up at all.

Xu Yi soon discovered that these tunnels were connected to the sewer pipes.

Fortunately, he didn't follow him.

More than half an hour later, Xu Yi came to an underground space.

"This is probably an ancient tomb?"

Xu Yi used the flash of his mobile phone to illuminate it, and he could almost confirm that this place was a tomb passage of an ancient tomb.

"Squeak."

The rat's cry reached Xu Yi's ears. They obviously found Xu Yi and attacked Xu Yi.

Xu Yi took out a steel knife and went straight to meet him.

After passing through the tomb passage, Xu Yi entered the tomb chamber.

There are some eternal lights in the tomb chamber. It should be that after the tomb chamber was dug through these mutant mice, the white phosphorus spontaneously ignited the eternal lights again.

With these eternal lights, Xu Yi could see clearly what was happening around him.

More than twenty mutant mice with gloomy eyes emitting light did not step forward, as if they were very restrained.

Suddenly, a sharp "squeak" sound came to Xu Yi's ears, causing severe pain in his brain.

"Rat King!"

Xu Yi saw a larger mutant mouse, the size of a tiger.

"roar!"

Xu Yi roared and smashed the machete in his hand towards the Rat King.

He had to interrupt the sonic attack, otherwise he would probably explain it here.

"Damn!"

When Xu Yi saw that the machete was about to approach, he suddenly shifted.

However, it also interrupted the sound attack of Rat King.

A submachine gun appeared in Xu Yi's hand and directly locked the Rat King.

"What is this ability?"

"Magneto?"

Xu Yi discovered that the bullet was fixed and there was no way to hit the mutant rat king.

To be honest, Xu Yi was very envious of this ability.

"Squeak."

Hearing this sound, all the mutant rats no longer restrained and rushed towards Xu Yi.

A mutant rat flew away with one punch and took out a steel knife again.

"System, upgraded to Tang Dao."

"Survival Point-15"

The machete in his hand suddenly changed, and Xu Yi cut at a mutant rat that was rushing towards him.

It was still in the air, but its head was cut off by Xu Yi.

After slashing left and right, killing six mutant rats, the Tang sword in Xu Yi's hand was scrapped again.

So Xu Yi took out a machete again and directly upgraded to Tang Dao.

After the Tang Dao was found, Xu Yi killed all the remaining mutant rats.

Xu Yi was also injured and was bitten several times.

Fortunately, the meat was not bitten down directly.

Now, there is only a mutant rat king left in the tomb.

After throwing away the second useless Tang sword, Xu Yi took out the last steel sword.

As soon as the thought moves, new words appear on the doorstep.

【Can use 15 survival points and upgrade the stainless steel Tang sword.】

【Can use 100 survival points, super alloy Tangjian.】

"Upgraded to super alloy Tang sword."

Xu Yi made a choice directly, and at the same time he regretted that he hadn't even watched it before. He chose the ordinary Tang Dao, wasting 30 points.

Xu Yi discovered that the Tang sword in his hand was made of a black saxalus, and its thickness and width also increased.

"Come on, try my new knife!" Xu Yi hooked his finger at the mutant rat king.

It was watching the whole process.

Xu Yi felt that its eyes were a little contemptuous, and seemed to look down on him.

"hehe."

"Um?"

A mutant mouse made a giggle sound?

Xu Yi's pupils shrank, and then rushed directly.

Too weird.

Xu Yi felt that it was like a person, not an animal.

After rushing up, Xu Yi felt as if he was blocked by an invisible wall.

"This is your support, so I'm very disdainful of me?"

Xu Yi felt that he was blocked by an invisible wall, and no matter how much strength he used, he could not get close to him.

"I don't believe it, my knife can't break your defense."

Xu Yi didn't believe in evil, so he waved the alloy machete in his hand and kept slashing.

One knife after another, each knife used all its strength.

Xu Yi didn't know how many times he had chopped, and his body was wet with sweat, and there was no dry place.

The Mutant Rat King sat on a bronze chair like a human, and was in that position, without any movement.

But its eyes were no longer contempt and a little solemn.

Xu Yi knew this was ridiculous, but the look he saw it was indeed so human, almost no difference from humans.

Because its eyes are big, even bigger than humans.

strength?

Xu Yi no longer had much strength and felt that all his strength was exhausted.

If there wasn't a warm current flowing in the stomach, Xu Yi wouldn't have insisted.

He felt that his body was quickly absorbing the medicinal power.

After hesitating for a moment, Xu Yi took out the intermediate body enhancement potion and directly penetrated it into his chest.

Power comes back instantly!

"ah!"

Xu Yi roared, jumped up and slashed at the mutant rat king.

"squeak!"

The mutant rat king screamed, and Xu Yi's machete hit it, slashing a wound.

However, Xu Yi was also knocked away by an invisible force.

Xu Yi stood up and wiped the sweat off his face.

"I thought your defense was really impossible to break. Haha, you're injured. Don't worry, you'll die soon."

As soon as Xu Yi finished speaking, he shot at the mutant rat king like a cannonball.

Slash!

The Tang sword in Xu Yi's hand slashed at the mutant rat king frantically.

Although it will be blocked, the distance from the Mutant Rat King has been reduced by less than five centimeters.

Intermediate body enhancer gives Xu Yi a surging power again.

At the same time, the warm current in the stomach is getting stronger and stronger.

He knew that his body was crazyly absorbing medicine, nourishing his body, and strengthening his bones.

"Chew."
To be continued...