With skills that can be upgraded infinitely, if I'm invincible, who is?

After agreeing on the details with the city lord of Tianyuan City, Su Yu left the Yuhuang Mansion and sped towards the north gate of Tianyuan City.

The closest city gate to the Yuhuang Palace is the North Gate.

Although monsters will appear at all four city gates after the monster siege begins.

However, all four city gates have teleportation arrays, so Su Yu can quickly switch between them.

Moreover, Tianyuan City itself has a protective formation, so even if Su Yu's switching speed is a little slower, it won't affect the overall situation.

The city's protective formation is not that fragile.

Moreover, once Tianyuan City survives this monster siege, its protective formation will become even stronger.

Just as Su Yu was heading towards the North Gate, the City Lord of Tianyuan City launched a monster siege.

A city announcement rang in the ears of all players in Tianyuan City.

[Main City Announcement: The monster siege has begun. Monsters will officially spawn in 10 minutes. Players are urged to form teams or join legions as soon as possible to defend the city. Once Tianyuan City is breached by the monsters, it will be reduced to ruins.]

As soon as the main city announcement was released, the main city chat channel of Tianyuan City instantly erupted in excitement.

"What the hell? Why are there monsters attacking the city?"

"I don't know. I asked my friends in other major cities, and none of them have started monster sieges."

"Is it only our Tianyuan City that has launched a monster siege? What's going on?"

"Let's go, let's hurry to the city gate to defend against the monsters. If Tianyuan City is reduced to ruins, we're doomed."

"Yeah, if Tianyuan City is reduced to ruins, we'll definitely be killed by the Night Hunters tonight."

"We don't know how strong the monster is, and whether we can hold out?"

"..."

Messages flooded the main chat channel of Tianyuan City, and suddenly another main city announcement rang out.

[Main City Announcement: Emperor Yu has created a city-protecting legion. All players are welcome to join. Joining the legion requires signing a contract, and players are not allowed to leave Tianyuan City for three years.]

[Note: There are only 100000 spots available in the legion, first come, first served! Only players below level 30 are allowed to join. Once you reach level 30, you will be automatically removed from the legion!]

"Holy crap, holy crap, the Emperor Yu is actually in our Tianyuan City."

"Join! Join! I've already joined the city defense legion!"

"Why are we not allowed to leave our Tianyuan City identity within three years? Is there some kind of trap here?"

"What a load of rubbish! The Emperor Yu is in Tianyuan City. Even without this restriction, I would not leave my identity in Tianyuan City."

"Indeed, it's said that the number of spots in each main city is limited, so other players won't have a chance to join Tianyuan City in the future."

"Damn, how come the legion slots are full so quickly? Where have you guys been practicing your hand speed all day?"

"Hehehe, it's obvious that the Emperor of the Universe is preparing to lead everyone to level up. Didn't you guys notice that the legion's quota is exactly 100,000?"

"Damn, it's true! I hesitated for just a second and missed a huge opportunity!"

"Haha, I only reached level 10 and entered the main city yesterday, am I going to instantly reach level 30 today?"

For a time, some were happy while others were sad, after all, this was a chance to quickly level up to level 30.

Furthermore, during the main city battle event, the first 10 people to reach level 30 will receive additional rewards.

Such a great opportunity has been missed.

……

On the other side, Su Yu glanced briefly at the list of 100,000 people in the legion.

Some are over level 20, while others are only around level 10, but it's not a big problem.

There are tons of high-level monsters and a 200% experience bonus, so even level 10 players can quickly level up to level 30.

After all, once a player reaches level 30, they will be automatically kicked out of the legion, and the number of people sharing the experience points will decrease.

The goal is to quickly gather 10 players who have reached level 30 to complete the main city battle mission.

"After bringing the first batch of 10 players, if there are any extra monsters later, I'll bring a few more batches of players," Su Yu thought to himself.

After all, he had already secured the position of deputy city lord of Tianyuan City, and the stronger Tianyuan City became, the greater his future benefits would be.

The reason why all those who join the legion are required to sign a contract and are not allowed to leave their Tianyuan City identity for three years is also for the benefit of Tianyuan City.

For at least the next three years, they can stay in Tianyuan City and generate a steady stream of income for the city.

As for three years from now, when they see Tianyuan City becoming stronger and stronger, they will definitely be reluctant to give up their identity as residents of Tianyuan City.

Soon, Su Yu arrived at the city wall of the North Gate.

Normally, players are not allowed to enter the city walls, but the city lord of Tianyuan City had already given Su Yu the green light, and no one dared to stop him.

Su Yu stood atop the city wall, where the view was excellent.

He gazed into the distance; for now, everything was calm and peaceful.

The monster density outside the safe zone is not high, and no monsters have yet spawned to attack the city.

At the same time, teams began to assemble outside the city gates. These teams were organized by various player factions in Tianyuan City.

Su Yu did not make unified arrangements for the members of the city protection legion, but simply let them do as they pleased.

After all, in Su Yu's view, he alone was enough to handle this wave of monster attacks; the others were just there to make up the numbers.

With most players' skill level, they probably couldn't even break through the monster's defense.

Suddenly, huge beams of light descended from the sky.

After the pillar of light dissipated, one after another, ferocious-looking monsters quietly emerged and rushed towards Tianyuan City.

"The monsters have respawned!" Exclamations rang out from the dense crowd outside Tianyuan City.

The safe zone outside Tianyuan City stretches for several kilometers and is extremely flat.

The monsters that came to attack the city all spawned outside the safe zone, and since there was no obstruction, everyone could clearly see the monster information.

"Holy crap, are all these level 60 monsters? Is this game even playable?"

"Oh my god, I'm only level 15, how am I supposed to fight level 60 monsters?"

"What do we do? What do we do? Can Emperor Yu alone stop so many monsters?"

"The sky has fallen. If we can't defend Tianyuan City, we're all doomed."

"This monster siege was definitely initiated by someone. After all, no other major city has initiated a monster siege. I believe that the higher-ups of Tianyuan City would not have done this if they were not absolutely certain."

"Indeed, at this point, we can only trust in the power of the Emperor Yu!"

On the city wall of Tianyuan City, Su Yu quietly watched the monster several kilometers away.

The monsters were still spawning in droves, and he planned to wait until there were more monsters before making his move.

Soon, the monster at the forefront was less than two kilometers away from the gate of Tianyuan City.

Thunderous wings instantly unfurled behind Su Yu.

Lightning!

Swish!

Su Yu's figure appeared instantly in the center of the monster torrent.

With the blessing of the true meaning of thunder, Su Yu can now use Thunder Flash to teleport a distance of nearly ten kilometers.

boom!

Su Yu instantly activated the true meaning of lightning, expanding the radius of his lightning domain from sixty meters to five kilometers!

In an instant, countless wails of agony merged into one.

Under the influence of the lightning field, all the monsters within a five-kilometer radius of Su Yu were reduced to charred corpses.