The Tidal Sea is the largest ocean in the Dragon Sleep World, stretching up to twenty thousand kilometers from east to west, with an area nearly three times that of the largest ocean on Blue Star. The map marked the location of the Bloodline Cave, roughly forty thousand kilometers from the Tidal Sea, which is about the distance of encircling Blue Star once. It’s imaginable how far the Bloodline Clan’s territory is from the Black Iron Dwarf Kingdom. Since the plan was already set, this journey to the Bloodline Clan’s territory was certain to be undertaken. Lu Heng made some preparations in the Black Iron Dwarf Kingdom before setting off for the Bloodline Cave marked on the map. Because this map is very ancient and only marked a point, finding the exact location through the map isn’t easy. Lu Heng didn’t need the exact entrance of the Bloodline Cave, as long as he got there, he could capture a Bloodline Demon for spiritual torture. So, after making preparations, Lu Heng officially set off. Two days later, Lu Heng arrived at the location marked for the Bloodline Cave, seeing a desolate desert. The desert was lifeless, with only occasional stumps of dead trees visible on the ground. These trees were dead but their wood was hard and rot-resistant for millennia. Yet these stumps had already decayed significantly. Lu Heng saw hardly any decent creatures along the way, occasionally spotting some reptiles, insects, and low-rank abyss creatures. The entire Dragon Sleep World had been ravaged by the Abyss. The map also marked another region, named Valendar. According to the migration history of the Black Iron Tribes, the birthplace of the Black Iron Dwarves is Valendar. That is to say, the birthplace of the Black Iron Dwarves is now the location of the Bloodline Cave. More accurately, Valendar was originally the homeland of the Black Iron Dwarves. After the Abyss descended upon the Dragon Sleep World, the Abyss Demons rampaged across this continent. The Bloodline Demons are the largest tribe among the Abyss creatures. After the Abyss Descent, the Bloodline Clan naturally engaged in continuous attacks and harassment on the Black Iron Dwarves. The Black Iron Dwarves, having failed to resist the Abyss invasion, chose to leave Valendar and divided into several branches, migrating in different directions. The Copper Furnace Tribe migrated south, moving intermittently for over a century, and finally arrived at the Molten Crown northwest of the Tidal Sea. The Emperor Sorondal, who led the Copper Furnace Tribe at the time, defeated the Flame Demon Gross upon the Molten Crown and established the Copper Furnace Kingdom. In other words, Valendar was originally the birthplace of the Black Iron Dwarves and later occupied by Bloodline Demons. However, most Bloodline Demons don’t live on the surface but in the underground world. Thus, the Bloodline Clan’s territory marked on the map is the Bloodline Cave. As Lu Heng stepped into Valendar, he saw a land completely disfigured by Abyssal contamination. On some hills, you could still see ruins stacked from boulders, resembling buildings. Due to the passage of time and Abyssal contamination, these ruins, if not carefully examined, were hard to recognize as the remnants of Stone Cities where Black Iron Dwarves once lived. As he delved deeper into Valendar, Lu Heng gradually found signs of Bloodline Demon activity. Since Bloodline Demons usually live underground, they are rarely seen on the surface. However, as the distance to the Bloodline Cave entrance decreased, signs left by Bloodline Demons could be found even without seeing them. After searching Valendar for half a day, Lu Heng finally discovered a group of Bloodline Demons. Lu Heng used the Invisibility Treasure Pearl to follow this group of Bloodline Demons, wanting to see if they were returning to the cave. This Invisibility Treasure Pearl was borrowed from the Black Iron Dwarf Great Wizard Hogrey, an A-level pearl that allows entry into an invisible state for 10 minutes upon use. This pearl grants the user invisibility abilities, making it extremely practical. Of course, when using an A-level Invisibility Treasure Pearl, if encountered by a perceiver with an A-level perception skill, it’s easy to be detected. That is to say, the pearl’s effect is poor in front of perceivers of Su Muyu’s level. Because Su Muyu’s comprehensive perception ability is S-level, or even S+. Though the pearl can’t fend off detection from A-level perceivers, its effectiveness remains strong. As long as you don’t provoke demons with strong perception abilities. Lu Heng followed this group of Bloodline Demons for over ten minutes, observing them entering a cavern with a diameter of ten meters. However, from the outside, it couldn’t be confirmed that this cavern was the entrance to the Bloodline Demons’ territory. Original content can be found at NovєlFіre.net Lu Heng waited outside the cavern for a moment and, after confirming no other movements, approached slowly. There were no guards outside the cavern. The reason is simple: after the migration of the Black Iron Dwarves several centuries ago, it became the territory of the Bloodline Demons, where no other creatures dared to approach. Thus, Bloodline Demons don’t need to worry about other creatures entering the cave. With the duration of the Invisibility Treasure Pearl ended, Lu Heng used another treasure bead, the Illusion Pearl, transforming into the appearance of a Bloodline Demon and stepping into the cave. The cave slanted downward, its end unseen. Moreover, the deeper he went, the darker it became. Fortunately, Lu Heng had Shadow Vision, an ability providing decent night vision. So, Lu Heng barely managed to see the underground cavern situation. Descending three to four kilometers, the underground space grew increasingly spacious, and the side paths increased in number.