Zhang Shi glanced at the available professions but didn't make a decision immediately. Based on his understanding of the system, the professions that were publicly available were definitely not very strong.

Zhang Shi smiled slightly, glanced at the time, and saw it was exactly 12 o'clock, time to sign in again.

The system notifies you that you have received the following rewards for checking in:

[Job Change Scroll - Shadow Warrior: Use this scroll to unlock the hidden job change quest - Shadow Warrior.]

Sure enough, the sign-in system thoughtfully provided a hidden class change scroll. This time, Zhang Shi did not hesitate and activated the scroll, triggering the class change quest.

Job change quest one: Enter a random dungeon and kill 1000 enemy units.

Zhang Shi frowned slightly, somewhat surprised by the difficulty of this mission. He roughly estimated that facing 1,000 enemy units, even with the backdrop of a zombie attack, would be a rather difficult task. Even with Zhang Shi's strength and the aid of firearms, it would still be a daunting task. If they encountered monsters with a magical worldview, like those in the Enchanted Forest, the difficulty of the mission would only increase.

The shelter is currently under development and is frequently attacked by zombie hordes. This job change quest requires survivors to enter a dungeon, and it's unclear how long it will take. Zhang Shi is worried that the shelter's operation will be disrupted after he leaves.

"Today is the seventh day of the extreme heat disaster."

Ge Dalong reached out and felt it; whether it was his imagination or not, the temperature suddenly seemed much cooler.

Zhang Shi recalled the Black Mist Guardian and gave him a deep look, wondering if this hidden profession was related to the Black Mist Guardian.

Ge Dalong turned around and noticed Zhang Shi's worried expression. He leaned closer and asked in a low voice.

"What's going on?"

Zhang Shi shook his head, indicating that everyone should return to the fortress to discuss this further.

Everything remained the same. The soldiers gradually adapted to the zombie horde and returned to their barracks to rest.

The shelter now has more than seventy people. Although they have to endure the high temperatures and the attacks of zombies, everything is progressing in a positive direction.

Looking at Zhang Shi's shared information, Ge Dalong learned of his worries and chuckled softly.

"We're here at the shelter. Everything is running smoothly, and the defenses are in place. What do you have to worry about? Go ahead and go with peace of mind."

Zhao Feng also stepped forward to offer encouragement.

"This is a hidden profession. If you're the first one to successfully change professions, the system might even reward you with some rare items."

Wu Qing didn't say much, but traded him a large amount of alchemical potions, told him to be careful, and then turned around and went back to the treehouse to rest.

The remaining three looked at each other, then smiled and dispersed.

The next day, just as dawn was breaking, Zhang Shi had already packed his gear and was ready to set off.

Inside the shelter, many soldiers had already gotten up and washed, preparing to greet the new day. Ge Dalong and Zhao Feng came over and handed Zhang Shi a burlap sack filled with homemade explosives.

"With your skills, you probably don't need a gun. Take this with you; it's something we developed last night. The bomb contains a chemical substance that will produce poison gas when it explodes. It's very powerful, so stay far away when you use it."

Zhang Shi packed the sack into his backpack, bumped fists with the two men, and prepared to leave. Before departing, Pipi, unusually, threw a tantrum, clinging to Zhang Shi's leg and refusing to let go.

Zhang Shi tried to pick it up, but Pipi whimpered and licked the scar on his leg with its little tongue. Zhang Shi shook his head helplessly and activated the instance, trying to force his way out, but unexpectedly, a white light swept by and teleported Pipi away with him.

As Wu Qing watched Zhang Shi leave, she slowly closed the window and silently prayed for his safe return.

...

When I opened my eyes, it was the familiar darkness again. Ahead was a medieval-style tavern, where candlelight illuminated the beer barrel decorations, making them particularly eye-catching in the night.

Pipi excitedly circled around Zhang Shi, then sniffed the air as if it had smelled something. It became alert and crouched down, staring intently in the direction of the tavern.

Zhang Shi used his Focusing Eye to observe the tavern, and sure enough, the outline of the tavern was highlighted in the lens, indicating that something was amiss there.

Zhang Shi whispered some words of comfort to Pipi, then took out Lao Duan and carefully headed towards the tavern.

Upon approaching, the dilapidated wooden door was ajar and not yet opened. Zhang Shi could already guess what was inside from the low growls. Pipi smelled the strong stench of blood and had already entered a battle stance, his muscles tense, staring intently ahead without moving.

Zhang Shi took a deep breath, gently pushed the wooden door open a crack, and peered inside to observe the situation.

Zhang Shi cautiously pushed open the crack in the wooden door, and a stench mixed with decay and rust rushed into his nostrils, causing him to frown involuntarily. The candlelight flickered, casting mottled shadows that made the ruined tavern interior both eerie and sinister.

Inside the tavern, the wooden tables and benches that should have been neatly arranged were now overturned and haphazardly placed, covered with a thick layer of viscous blood, as if they had just survived a brutal feast. The corners that were once places for people to rest had now become temporary dens for zombies. They sat or lay down, their bodies draped in torn cloth and pieces of flesh that were not their own, with traces of blood still clinging to their mouths. Their eyes were empty and dull, and occasionally they would let out low, hoarse roars that echoed in the cramped space, sending chills down one's spine.

Even more horrifying were the human remains scattered on the ground, some with incomplete limbs, others with severed heads, the white bones intertwined with dark red flesh and blood, creating a series of shocking scenes.

Some zombies were gnawing on the remains, their movements slow and mechanical. Each bite was accompanied by a tooth-grinding sound and more blood and flesh splattering, yet they seemed insatiable, greedily devouring their food.

The air was thick with the stench of blood, as if even the air itself had been stained red.

Even in this environment, Pipi remained highly alert, its eyes gleaming golden in the darkness, clearly showing its extreme vigilance towards the scene before it. Zhang Shi gently patted Pipi's back, signaling it to remain calm, while secretly rejoicing that Pipi was with him this time; its keen intuition might play a crucial role in the battle to come.

He slowly drew Old Duan's sword from his waist; its razor-sharp blade reflected a cold light, standing out conspicuously in the environment. Zhang Shi took a deep breath, composed himself, and prepared for the impending battle. He hadn't expected to encounter such a terrifying creature in the dungeon; for a moment, he even considered giving up.

The job change quest requires killing a sufficient number of enemy units. To successfully change jobs, he must fight his way through this zombie-infested tavern. The darkness lurked with danger, everything was unknown, and Zhang Shi dared not make any loud noise, fearing it would cause further unforeseen complications. He quietly entered the tavern and slowly closed the wooden door.

He knew that now that he had made his choice, everything before him was just the beginning.

Just as he was about to unleash his fury, a piercing scraping sound came from behind the tavern counter, accompanied by an even more intense roar, as if a new threat was approaching. Zhang Shi's eyes instantly sharpened. He gripped Lao Duan tightly and, together with Pipi, stepped into this abyss of death.