Caiyi's words made Niu Bixiao narrow his eyes, and Caiyi pointed at the snake horn of the Red Sword King Snake and said, "Master, this horn can be used to refine weapons. The master has always used long weapons, but Caiyi can use this horn to refine a dagger for the master, at least a magical dagger."
Niu Bi frowned and said, "Why just make one? Such a big snake horn can be refined hundreds of times!"
Caiyi shook her head: "The greatest value of snake horns is the sharp corners, and the remaining materials can only be used for other purposes."
"Oh." Niu Bi nodded in a clear way and said, "Since it is the snake horn of the Red Sword King Snake, this dagger should be very toxic!"
Caiyi thought for a while and said, "If the master wants to be poisonous, Caiyi can merge the venom into the refining. When the dagger is successfully refining, it will be a poisonous dagger that is blood-sealed."
Niu Bi's eyes shone and she nodded: "Caiyi, then I'll ask you."
Caiyi smiled slightly: "Master, leave it all to Caiyi!"
"I don't worry about doing things." Niu Bi smiled, looked at the other items that the Red Snake exploded, shook her head, and stuffed them all to Caiyi, then sat on the back of the dragon wolf, and said, "Let's go! Go and do the mission in the underworld."
Returning to the underworld, Niu Bi teleported directly to the dark forest. When he went deeper to this point, he would encounter an immortal beast or a divine beast almost every ten kilometers forward. Niu Bi naturally had a great city. Ten hours later, when he killed a level 80 immortal beast, the tree demon queen, finally a golden light flashed and successfully rose to level 55.
Niu Bi laughed wildly at the sky: "Wow! Who said that upgrading is difficult! With my upgrade speed, level 100 is not just a handful of pinching!"
The explosion rate of the fairy beasts is naturally not said, but this time, the equipment Niu Bi needed was not exploded, so he had no choice but to get all the Caiyi. Since Niu Bi fought monsters, there have been at least dozens of fairy beasts and divine beasts. In addition, there are countless bosses below the gold level. The equipment can pile up into a mountain, but Niu Bi himself did not get much of these things, and basically all went into Caiyi's pocket. Now, the things in the Colorful Cloth storage space can make all the indigenous people in the underworld jealous and even trigger a protracted war.
Caiyi put away the things and said, "Master, since this hidden task has no time limit, it may be very difficult. I don't know when I will find the Dark Castle."
Niu Bi summoned the lost undead legion and said, "Look for it slowly. Anyway, there are so many fairy beasts and divine beasts here. Even if you can't find them, kill these divine beasts and fairy beasts first and earn some experience."
Caiyi nodded slightly, landed on Niu Bi's head, leaned on Zhuque, and said, "Master, are you planning to level 60 in the underworld this time, or go to the mandatory place Caiyi said?"
Niu Bi shook her head: "I haven't thought about it yet, let's do it! If you reach less than 60 before finding the Netherworld Blood Demon Flower, we will go to the place you mentioned. If it reaches it, then go again later."
"Well, is it the basis for finding the Netherworld Blood Demon Flower?" Caiyi asked.
"Yeah." Niu Bi directed the army forward and said, "The Blood Spirit Grass and the Netherworld Blood Demon Flower can refine medicines that can improve the level. The level is too precious to me now. If the medicines I practice can upgrade me to dozens of levels, hehe, it will be no problem even if I don't go."
Caiyi shook her head and said, "Master, you are too optimistic. Maybe the Blood Spirit Grass and the Netherworld Blood Demon Flower can really practice medicines to improve the level. However, if you want to improve the level, there will definitely be some restrictions, especially the higher the level, the greater the limit. With the current level of the master, although Caiyi cannot guarantee it, it will definitely not exceed level 70."
"Level 70?" Niu Bi touched her chin and said, "That's almost a dozen levels, which is not bad."
"Yes." Seeing that Niu Bi could accept this level, Caiyi felt a little relieved. She was afraid that Niu Bi would not meet Niu Bi's expectations by then, which made Niu Bi feel disappointed. Niu Bi walked along the way and rarely experienced setbacks. Caiyi was afraid that Niu Bi would not accept this setback and would affect her future upgrades.
Niu Bi fought in the Dark Forest for more than 60 hours. When she was physically and mentally exhausted, she stopped, then reset the teleportation array and returned to the villa in Neil City.
When he arrived at the room, Niu Bi fell asleep and slept for more than ten hours before he woke up.
After waking up, Niu Bi, Aisha and six little loli were chatting and having supper, then returned to the Dark Forest again, fight monsters and upgrade, and find the entrance to the Dark Castle. After three months, Niu Bi's level was upgraded to two levels, reaching level 57. Finally, on this day, the last divine beast in the Dark Forest, the level 95 Furious Iron-arm Bear, was killed, resurrected, and subdued, and finally found a tunnel in the bear nest of the Furious Iron-arm Bear.
Niu Bi was immediately excited and said, "Caiyi, look, is this the entrance to the Dark Castle?"
Caiyi looked at the tunnel and said, "Master, you'll know if you go in and take a look."
Niu Bi laughed and said, "Yes, no matter whether it is, you will know if it is or not!"
Immediately prepared the entire army, Niu Bi let the stone demon as the vanguard and advance towards the depths of the tunnel. Xiao Huang led the skeleton cavalry as the front army, Niu Bi as the central army, and the golden skeleton mage as the rear army, and the army entered the tunnel in an orderly manner. After half an hour of travel, his eyes finally lit up and a colorful world appeared.
There is a red sun hanging in the sky, with green grass and green trees forming forests, and flowers of all colors blooming proudly, showing their beauty to the world. From time to time, cute animals walk around in the shade of green grass and trees, eating delicious grass, and there is a small river not far away. The sound of the flowing water is so pleasant. Occasionally, you can see a few swimming fish jumping on the water surface and transforming for a period of time, and one of them plunges into the river. Everything is so beautiful, just like a fairyland on earth.
"Wow! So beautiful!" Caiyi couldn't help but fly in amazement when she saw the scene in front of her. She was playing around here. In the underworld, every day was dark, and Caiyi's personality was almost suppressed, but at this moment, she finally saw such a colorful world in the darkness, which made Caiyi fly happily and laughter.
Niu Bi let the dragon and wolf rise up. From a distance, you can see a castle vaguely on a mountain in the distance.
"Dark Castle!" A trace of excitement flashed in Niu Bi's eyes: "Finally found it!"
"Hehehe, deer, don't run!" Not far away, Caiyi smiled and chased a sika deer. Perhaps she hadn't seen a stranger for many years. The deer seemed to be afraid of Caiyi and ran so happily, but Caiyi's speed was much faster than it, so she quickly caught up with the deer and landed on top of its head.
Holding the deer antlers in both hands, Caiyi giggled and said, "Little Deer, I've caught you!"
The deer seemed even more frightened, and let out a terrified deer sound, which made Caiyi frown and let go of her hand: "Forget it! I won't play with you anymore."
Seeing that the deer gradually ran away, Niu Bi smiled and said, "Caiyi, stop playing, I've found the castle."
"Here!" Caiyi flew to Niu Bi's head and said, "Master, the monster level here seems to be very low, and there is no carnivorous beast, no dark aura, and it is not like the underworld at all."
Niu Bi nodded and said, "It's a bit like my world, but the times seem to be around the medieval ages."
"It's really strange." Caiyi didn't know much about the underworld, nor did she understand why there was such a world in the dark underworld.
"Don't worry about it or not, go and check out the castle first. Maybe you can find super artifacts or something." Niu Bidao.
Caiyi burst into laughter and said, "I wish I could find the super artifact."
"Hehe, I think it's almost the same. This castle is not easy to find. It took so much effort. If there is no super artifact, it would be a loss." Niu Bi fought in the Dark Forest for more than 100 days and spent so long to find the entrance to the Dark Castle. If there is no super artifact, I really sorry for his hard work and hard work.
Niu Bi rode a dragon and wolf flying in the air, and Xiao Huang directed the army of undead to advance on the ground. Although the dark castle was within Niu Bi's sight, she ran to death on the mountain. After more than three hours of the undead army advanced on the ground, the castle was still vaguely visible.
Niu Bi couldn't help but frown, put away all the little yellow and the others, and also the dragon and wolf, then flew with the sword and advanced towards the castle as fast as possible.
At full speed, Niu Bi actually took him five hours to arrive in front of the castle.
When I arrived in front of the castle, Niu Bi realized that the castle was so huge. The door was as high as 100 meters and eighty meters wide. Niu Bi was nearly 1.9 meters tall. It was so outrageous that he could walk through the gap under the door with just bent down.
"So big!" Caiyi looked at the huge castle and exclaimed: "It's simply a giant's house."
Niu Bi frowned: "A castle of such a big one is probably seventy or eighty meters tall to walk through this gate. Could it be that this is the residence of the Titan Giant?"
Titan Giant is a monster that often appears in many games. It belongs to the Western category and is similar to the Chinese giant gods. In short, it is very big.
Caiyi looked at the crack in the door and said, "Master, Caiyi didn't feel any breath of life, so there should be no danger. Let's go in and take a look!"
Caiyi nodded and flew in through the crack of the door. As Niu Bi expected, the things in the castle were too big, almost magnified by fifty times. Niu Bi was about the same size as a mouse here.
The buildings and items in the castle are similar to the style of the European medieval European style that Niu Bi is familiar with. Niu Bi even wondered if she had come to the giant kingdom of the fairy tale world, but this should not be possible, because except for this castle, everything else is normal.
Niu Bi walked around the castle, and basically all the daily necessities except food, but all the effects were magnified fifty times. Apart from that, nothing was discovered.