The battle in the basement was over soon, but Gianna and Illusia were also severely depleted of mana, Song Zheng was tired enough, and only Catherine still maintained a good physical strength due to the elven bloodline.

"How did you escape?" Song Zheng asked Gianna with some curiosity, he didn't think that Gianna and Illusia alone would be able to escape from Kel'thugad's hands.

"After I was captured by Kel'thugad, I was imprisoned in the depths of this psychic academy, but fortunately Iluhia secretly rescued me and led me through the labyrinthine basement below." Gianna said with a little trepidation.

Hearing this, Song Zheng couldn't help but look at Illusia next to him curiously.

Despite the bloodstains on her body, it can still be seen that she is a very delicate girl.

And through the battle just now, he can be completely sure that she is still a normal human and has not become an undead.

"Haven't all the people on this island become undead, how did you survive?" Song Zheng asked suspiciously.

"It was my mother who saved me, and she didn't want me to become an undead, so she used a special magic on me to disguise my breath, and smeared blood on my body to make me look like a real undead, and then let me stay in the middle of a group of undead and keep the undead sluggish, which deceived the others." Illusia explained, but there was no joy on her face that she had survived, but rather endless sadness.

"Mother's love is really great...... Song Zheng can understand her feelings, her mother should be Janice Barov, who was a mage before her death, and after becoming an undead, she is also a powerful necromancer, and guards the depths of the psychic academy.

Janice Barov herself may have been able to escape, or even do better, like Illusia, but she left hope to her daughter.

"Thank you for saving Gianna, otherwise we wouldn't know where to find her." Song Zheng thanked him again.

"I don't need to thank me, in fact, I have always wanted to escape, but I have no chance, I can only stay with those undead in fear until not long ago, there seems to be a big commotion in the basement below, and I have a chance to rescue Gianna." Illusia said with some crampedness.

"There's a big commotion in the basement below?" Song Zheng couldn't help but be surprised when he heard this, they hadn't entered the deep underground at the moment, so there weren't many undead guards along the way, and there might be more guards in the depths.

"Yes, it seems that some powerful enemy has broken in, and I saw Les Frost and Gardin rushing over." Illusia said.

"Les Frostwhisper, Dean Gardin? Oh no, could it be that Sylvanas broke into here? Song Zheng suddenly jumped wildly from the corner of his eyes.

Sylvanas is one of the most daring artists, and it is possible that she used her disguise to infiltrate the depths of the psychic academy in an attempt to rescue Gianna, but for some reason she was discovered, and even alarmed the lich Les Frost and the dean Gardin.

"Is Sylvanas here too? Did you really bring reinforcements from Silvermoon City? Gianna looked at Song Zheng with some excitement.

Song Zheng could only smile bitterly and shook his head when he heard this: "Those elves are reluctant to send troops, and Sylvanas came to help deal with the undead natural disaster in his personal capacity. ”

Gianna couldn't help but sigh when she heard this: "The elves have always been arrogant, it must be not easy for them to send troops, when they fought with the orcs, they were able to participate in the war, and it was because the wolf riders of the orcs fought until Quel'Salas, they had to participate in the war, but I didn't expect Sylvanas to take the initiative to help, she was colder than anyone else when she was in Dalaran before." ”

"Well, I didn't expect her to take the initiative to help, but if it's really her below, then it's going to be troublesome......" Song Zheng was already frowning.

It was a blessing to be able to save Gianna, but it would be a tragedy to lose Sylvanas because of it.

"We'll go down and pick her up at once." Gianna immediately stood up, but almost fell again, apparently weakened by the battle.

"You guys take a rest first, and recover your magic by the way, or we won't even have the strength to run if we meet Kel'thugad." Song Zheng sighed.

With the strength of these few people, it may be very easy to deal with ordinary skeletons and ghouls, but if they encounter Kel'thugad, they may have to be captured.

"Kel'thugad is gone, otherwise we wouldn't have been able to get out." Illusia whispered.

"Kel'thugad is no longer here?" Song Zheng couldn't help frowning when he heard this, this seemed to be good news.

"Yes, I heard that he seems to be going to meet some demon king, and he has already left here." Illusia said.

"Demon King...... Could it be the Dreadlord? Song Zheng's heart moved, and at the same time, he was also a lot more relieved, if Kel'thugad ran to see the Dreadlord and was not here, then Sylvanas would be much safer.

However, there are still many powerful necromancers in this psychic academy, and with the endless undead cannon fodder, it is still too dangerous to rely on their power to go deep underground.

When Gianna and Illusia meditated to regain their powers, Song Zheng had nothing to do, and he used up his physical strength when he fought, and now it seemed that he had to rely on eating and sleeping to recover.

When he was bored, Song Zheng casually checked his state to see how much experience he had gained in the battle just now, knowing that he also had a lot of assists behind Catherine.

However, when he opened the attribute panel, he was surprised to find that his experience points had suddenly increased by hundreds of thousands, which was completely enough for him to upgrade to another level.

"How can there be so much experience, could it be that the experience value of the undead in this psychic academy is higher?" Song Zheng remembered that in the game, the monsters in those dungeons were often more experienced than the monsters in the wild.

But even so, it is impossible to suddenly gain hundreds of thousands of experience, which requires the killing of thousands of monsters, and it must have been attacked by him.

Song Zheng recalled the battle just now, although he had been desperately mending the knife, but without using the knife fan, he had at most mixed with the experience of more than a hundred undead monsters, which would definitely not bring him so much experience.

"Could it be the experience that the necromancer just brought with you?" Song Zheng suddenly remembered the necromancer who was killed by him and Catherine's sneak attack before.

Although he didn't know his identity, he looked like he was quite powerful, maybe he was a boss-level powerhouse in this psychic academy, but he died very unjustly at the hands of himself and Catherine.

"It seems that leveling up is not as difficult as expected, as long as you can kill a few more bosses, the experience points will completely skyrocket......" Song Zheng secretly rejoiced, and at the same time invested all those experiences into the thief profession.