Goodness, Zhang Yi had planned to spend 10 gold coins to buy the Intermediate Fireball Spell from Happy Fat Otaku but couldn't. Now, it dropped after Happy Fat Otaku's death!

Clearly eyeing the skill book, Zhang Yi suppressed his desire and calmly asked Storm Angel, "What does this mean?"

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"It's for you," Storm Angel replied. "Aren't you a Beastmaster? You can use this skill."

"How much?" Zhang Yi asked deliberately.

Storm Angel chuckled, "No need for money. I said, without me, you would have been the one to kill him, and this item would have dropped for you. So, it's yours."

Zhang Yi didn't stand on ceremony and took the skill book from Storm Angel's hand. "Thanks, then. If I find good equipment or skill books later, I'll consider selling them to you first."

Storm Angel was delighted. "Great, as long as it's something I need, price is not an issue!"

After a pause, Storm Angel continued, "Brother, let's add each other as friends so we can stay in touch."

"As for friends, there's no need. I prefer to be a lone wolf and don't like making friends," Zhang Yi said. "The Safe Zone is only so big, and we'll run into each other often."

"Alright then..." Storm Angel said regretfully.

Zhang Yi waved his hand. "I have things to do, so I'll be off. Thanks for the skill book, see you around."

With that, Zhang Yi turned and left.

It was because of the betrayal by his good brothers Mu Chen and Lin Ruo, with whom he had an eight-year friendship in his past life, that Zhang Yi in this life dared not easily trust anyone or make friends.

As Zhang Yi left, beside Storm Angel, a female mage named Storm Fantasy, who looked two or three years younger than Storm Angel and wore a green magic robe, said, "Honey, that person isn't very tactful. Why did you give him a skill book for free?"

Storm Angel shook his head, looking as if he saw through everything. "Didn't you notice? This person is extraordinary, probably a hidden big shot. He might have a super team stronger than our Storm Family backing him. Otherwise, he couldn't have developed so smoothly early on by himself."

"So we must maintain a good relationship with him and not let King's World find an opportunity to turn Yinuo Qingcheng into an enemy."

"Besides, it's just a green skill book. Do you know how much impact the bow he sold me has had?" Storm Angel looked at the Silver Moon Bow in his hand, still a bit excited. "I believe his backing will secretly get him better equipment. When he has good gear he can't use, he can sell it to me, which is an important way for me to enhance my strength!"

Storm Fantasy nodded. "You're so thoughtful, honey!"

Meanwhile, at the Revival Spring in Hope Town, the chubby mage Happy Fat Otaku, who had just used a revival chance, opened his friend list in confusion, found Storm Angel, and sent an angry message: "What do you mean?"

Ding—

Storm Angel replied instantly: "Anyone who touches my brother will be killed!"

Ding—

Storm Angel sent a second message: "From today, our friendship ends here. If you dare target Yinuo Qingcheng again, you'll regret it."

Seeing this message, Happy Fat Otaku was so angry that smoke seemed to come out of his nostrils. Just as he finished editing a message full of curses to send to Storm Angel, he received a system notification—

"Ding—The other party has blocked you, message cannot be sent!"

"Damn!" Happy Fat Otaku cursed, "Bastards, you'll all die horrible deaths!"

On his way to the Undead City, Zhang Yi looked at the Intermediate Fireball Spell in his hand and couldn't help but sigh, "You wouldn't sell it for 10 gold coins, but you gave it to me for free. Why?"

With that, Zhang Yi unhesitatingly used the Intermediate Fireball Spell to overwrite the Fireball Spell in his skill list, completing the learning process.

Due to insufficient skill slots, and because players in the Apocalypse world cannot have two of the same skill simultaneously, he had to either overwrite or extract the lower-level skill and replace it with a higher-level one.

However, the cost of extracting skills is quite high. Unless it's a very rare skill, like the basic white Fireball Spell, spending a few gold coins to extract it isn't necessary.

Currently, at level 13, Zhang Yi has 4 skill slots, just enough to accommodate two green-quality skills: Intermediate Fireball Spell and Chain Lightning.

The Intermediate Fireball Spell, when used by a Beastmaster, has a damage coefficient of 125%. With the bonus from the Eternal Chain talent Skill Enhancement, Zhang Yi's Fireball Spell damage reaches 145%!

Combined with a Lucky Strike, the damage is a terrifying 195%...

The Intermediate Fireball Spell also consumes more energy than the basic one, with energy points per use increasing from 7 to 9, though the cooldown remains at 5 seconds.

After spending over twenty minutes, Zhang Yi finally reached the Undead City.

From a distance, it was a city surrounded by walls tens of meters high, looking desolate. Countless crows circled above, surpassing the wall's height. The towering skyscrapers in the city appeared to be about 70% damaged.

According to the detailed map description.

The Undead City was one of the first human main cities invaded by aliens through wormholes over ten years ago, originally named Cloud City.

In a week-long battle, a million humans in Cloud City were slaughtered by the alien vanguard, turning the vast city into a dead city.

After capturing Cloud City, the aliens used it as a base for their invasion of Earth. The alien vanguard's leader, Rocky, used his mutation powers to transform the city's million corpses into skeletons and undead to guard the base—Undead City.

Since the lowest-level monsters in the Undead City are level 15, and the current average player level is around 13, it has become a suitable leveling spot.

Thus, many players are entering the Undead City, mostly in groups of three or five, with very few going solo.

Except for Zhang Yi.

So, Zhang Yi joined the other players heading towards the Undead City.