I only reached the Foundation Establishment stage at eighty years old, and then the system appeared.

After passing the first level, Yang Hongbo appeared in a passage. In front of him was a light screen emitting white fluorescent light. A line of colored subtitles appeared on the light screen: "9, 8, 7... 3, 2, 1". Suddenly, Yang Hongbo's figure was sucked into the light screen.

When Yang Hongbo regained consciousness, a screen of light appeared in front of him: You are now in a strange world, where there are mountain spirits, monsters, zombies and ghosts. You need to kill the biggest boss in this world - the Black Dragon Demon King - within a hundred years to pass the level.

You are currently a captain in the Demon Slaying Division of Langya County, Lingjiao Prefecture, under the Demon Slaying Division of the Azure Dragon Dynasty, at the Blood Refining Realm. (Cultivation realms here are: Skin Refining Realm, Blood Refining Realm, Bone Refining Realm, Violet Refining Realm, Furnace Realm, Initial Innate Realm, Middle Innate Realm, High Innate Realm, Peak Innate Realm, Initial Grandmaster Realm, Middle Grandmaster Realm, High Grandmaster Realm, Peak Grandmaster Realm, Grandmaster, Saint Realm, God Realm!)

At this moment, Yang Hongbo realized that he hadn't used the system in a long time and wondered if it was still usable here. So he asked in his mind, "System, are you there?"

"Respected host, this system is here!"

"Let me see how many points I have left?"

"No!"

"No way, I remember I got a billion points when I advanced to God Emperor, didn't I?"

"Dear host, this is a separate space. You do not currently have any points here. Please work harder!"

Damn! I'm speechless!

Yang Hongbo put on his clothes and walked out of the house. This was his home in this world. He lost his parents when he was young and lived alone. Fortunately, he found a cultivation manual and, after several years of hard work, he cultivated to the Blood Refining Realm.

He joined the Demon Slayer Division before he even started practicing martial arts, starting as a menial worker. After practicing martial arts, he gradually rose to the rank of a junior Demon Slayer, and now he has been promoted to the rank of senior Demon Slayer. However, the martial arts manual he used only supported him to cultivate to this level.

(The symmetry between martial arts realms and the positions of Demon Slayers: Skin Refining Realm is a junior Demon Slayer, Blood Refining Realm is a senior Demon Slayer, Bone Refining Realm is a probationary centurion, Dirty Refining Realm is a centurion, Furnace Realm is a deputy commander, Innate Realm is a commander, Grandmaster Realm is a pacification commissioner, Great Grandmaster Realm is a deputy commander, Saint Realm is a deputy commander, and Divine Realm is a commander.)

Upon arriving at the Demon Slaying Division, several of his lieutenants told him, "Commander, a small village was wiped out yesterday, likely by a demonic beast!"

"Has someone reported it to the police?"

"Yes, last night some hunters wanted to stay at their place for the night, but when they got there they found the whole village gone. They were so scared they ran to the county to report it to the police that very night!"

"Let's check if everyone's here!"

Soon, the demon-slaying envoys had all assembled. Yang Hongbo looked at his young but spirited subordinates and nodded inwardly. In this strange world, they were the last line of defense to protect the people.

"Let's go!" Yang Hongbo gave the order, and the group mounted their horses and galloped towards the small village where the incident had occurred.

Throughout the journey, Yang Hongbo frowned deeply. He knew all too well that in this world, demons roamed freely, and the lives of ordinary people were filled with unbearable suffering. Their mission, the Demon Slayer Division, was to slay demons and protect the people's safety. However, the annihilation of an entire village was clearly not the work of ordinary demons. It was very likely that they had encountered a horde of demons, or even that a high-level demon was directing them from behind the scenes.

Thinking of this, Yang Hongbo quickened his pace. He had to get to the scene as soon as possible, find out the truth, and seek justice for the dead people.

When they arrived at the village, the scene before them made everyone gasp. Bloodstains were everywhere, houses were collapsed, and the village was a scene of utter devastation, clearly indicating a fierce battle had taken place. Several areas showed signs of intense fighting; broken weapons and remnants of fortifications were scattered on the ground, suggesting that there were a few low-level martial artists in the village at the time. Even so, the village had been completely slaughtered, demonstrating the sheer number and power of these monsters.

"Sir, look here!" a junior officer said, pointing to a pool of blood on the ground.

Yang Hongbo stepped forward and carefully examined the bloodstain. He noticed that the bloodstain was not completely dry, indicating that it was not left by an ordinary person. Moreover, the direction of the bloodstain was strange; it did not lead out of the village but towards a large mountain behind the village.

"Everyone be careful, these monsters may not have gone far, they may be hiding in that mountain," Yang Hongbo said in a deep voice.

"Sir, what should we do now?" a junior officer asked.

"Let's follow this trail of blood and see if we can find any trace of these monsters," Yang Hongbo said, and then took the lead in walking towards the direction of the blood trail.

The group followed closely behind, proceeding cautiously. They knew that in this strange world, any carelessness could plunge them into utter ruin.

Following the trail of blood, they soon arrived at the foot of the mountain. This mountain was called Black Edge Mountain, with steep slopes and dense forests, clearly a place where hidden dragons and crouching tigers resided.

"Everyone be careful, we're heading into the mountains!" Yang Hongbo said, and then took the lead into the mountains.

The situation in the mountains was more complicated than they had imagined. The dense forests obscured their view, making it difficult for them to see the path ahead. Moreover, an eerie atmosphere permeated the mountains, sending chills down their spines.

"Sir, something seems amiss here," a junior officer whispered.

"Everyone stay alert and don't get separated," Yang Hongbo said in a deep voice. He could also sense that something unusual was happening here; clearly, something dangerous was hidden in this mountain.

They continued on their way when suddenly, a low roar came from ahead, followed by a group of demonic beasts rushing out of the forest and attacking them.

"Prepare for battle!" Yang Hongbo shouted, drawing his long sword from his waist and charging forward.

A fierce battle ensued, with Yang Hongbo and his men fighting a desperate battle against the demonic beasts. These beasts were powerful and numerous, making the fight extremely difficult for them.

However, Yang Hongbo and his men were all seasoned demon slayers. They cooperated well and used appropriate tactics, and quickly stabilized their position and began to counterattack.

After a fierce battle, they finally repelled the horde of monsters and continued their journey. However, they knew this was only the beginning; the real danger lay ahead.

They continued following the trail of blood, and soon they discovered a startling fact—the bloodstains weren't left by a single type of demonic beast, but rather by a mixture of multiple species. This meant they had likely encountered a group of different kinds of demonic beasts gathered together.

"Sir, what should we do? We seem to be in big trouble," a junior officer said anxiously.

"Don't panic, let's keep going and see if we can find their nest," Yang Hongbo said in a deep voice. He was also a little worried, but he knew that they could not back down now. They had to find out the truth and seek justice for the dead people.

They continued on their journey, and finally, deep in the mountains, they discovered a huge cave. The cave was pitch black, bottomless, and exuded a strong, eerie aura.

"Everyone be careful, this might be their nest," Yang Hongbo said, and then took the lead into the cave.

The situation inside the cave was worse than they had imagined; it was riddled with traps and mechanisms, and many monsters patrolled the area. They proceeded cautiously, afraid of triggering any traps or being discovered by the monsters.

After a difficult exploration, they finally reached the deepest part of the cave. Here lay a vast space with a massive altar in the center, upon which lay many strange magical artifacts and offerings. Surrounding the altar were all sorts of monstrous beasts, watching them menacingly.

"Commander, we're surrounded!" a junior officer exclaimed in terror.

"Don't panic, everyone get ready for battle!" Yang Hongbo said in a deep voice. He was also a little nervous, but he knew that they could not back down now and had to fight to the end.

A thrilling battle ensued, with Yang Hongbo and his men fighting a desperate battle against the monsters. They wielded long swords, slaying one monster after another, but the monsters were too numerous, and they gradually found themselves in a predicament.

Just as they were about to give up, suddenly, shouts of battle erupted outside the cave. Immediately afterward, a group of demon slayers rushed in and joined them in battle. It turned out that other demon slayers from Langya County had heard the news and come to their aid.

Through everyone's combined efforts, they finally repelled the monsters, destroyed the altar, and thwarted their plot. In the process, Yang Hongbo demonstrated his exceptional leadership and combat skills, earning the respect and praise of everyone.

This incident gave Yang Hongbo a deeper understanding of the dangers and cruelty of this world. He knew that he must cultivate even harder and improve his strength in order to better protect the people and fulfill his mission.