Han Li was intent on seeing just how tough this gray cloth was, so he increased his strength again. But even after exerting his full power, he still couldn't tear it.

He examined the gray cloth, his eyes full of curiosity.

After pondering for a moment, he flicked his finger, and a ball of crimson flame shot out, enveloping the gray cloth.

The flames blazed fiercely, emitting scorching heat, but the gray cloth remained completely unchanged.

Han Li waved his hand to disperse the flames, then waved again, sending out a stream of water light that enveloped the object.

Strands of blue light emerged in the water, twining around the gray cloth.

The gray cloth still didn't change in the slightest.

Han Li frowned slightly. He opened his five fingers, and five bolts of golden lightning appeared, covering the gray cloth…

Half an hour later, Han Li looked at the gray cloth in his hand, a helpless expression on his face.

During that time, he had tried almost every method he could think of, squeezing oil out of a stone, so to speak.

But the gray cloth was impervious to everything, remaining completely unresponsive.

"Xiong Shan wouldn't part with this thing even if it cost him everything, so it must have something special about it. Oh well, I'll study it slowly when I have the chance later." Han Li smiled wryly and put the gray cloth away.

Just then, the azure light sphere around Lu Yuqing suddenly flickered a few times, then broke apart, transforming into clusters of bright azure light that merged into her body.

The woman opened her eyes, her complexion mostly restored.

"Brother Han, I'm sorry to have kept you waiting." She stood up and said to Han Li.

"It's nothing. Can you tell me if there's any way to determine the approximate location of this area?" Han Li waved his hand, glanced at the black stones scattered all around, and then looked up at the dark yellow sky, saying.

"As far as I know, the terrain within the Youhan Territory is complex and the environment varies. There's more than one Gobi Desert area like this. Based on what I see now, I can't determine where we are." Lu Yuqing shook her head and said.

"Then let's look around. Even if it's desolate, we can't just stand here." Han Li said, waving his hand to summon the Azure Luan Flying Boat and stepping inside.

Lu Yuqing naturally had no objections and leaped into the flying boat.

Han Li activated a magical incantation with one hand, and the surface of the flying boat lit up with azure light, shooting off in a certain direction.

This area, like the previous blizzarding ice field, also had an invisible force that limited the spread of spiritual sense. Even with Han Li's powerful spiritual sense, he could only extend it for a few hundred miles, so the flying boat's speed wasn't very fast.

A moment later, Han Li raised an eyebrow and looked toward a direction ahead, and the Azure Luan Flying Boat beneath him also paused slightly.

"Brother Han, have you discovered something?" Lu Yuqing asked.

"I've found something, but it's not very precious. Never mind, let's go take a look." Han Li nodded, and the flying boat deviated slightly, flying towards the left front. It quickly flew more than three hundred miles and stopped.

The two floated down from the flying boat, landing on the ground.

A large patch of purplish-black mushrooms grew on the ground below, each one about ten feet tall, with deep purple circular patterns floating on them. The edges were even bright red, making them look extremely beautiful.

This mushroom patch covered a large area, about an acre or so, like a dazzling sea of flowers growing in this desolate Gobi Desert, which was very abrupt.

"These are Mocloud Mushrooms!" Lu Yuqing's beautiful eyes lit up.

"Could it be that you can determine our location from these Mocloud Poison Mushrooms?" Han Li's eyes flashed, and he asked.

He had read about Mocloud Mushrooms before. These mushrooms contained potent poison and could be used to refine some poisons or magic treasures with poisonous attributes, but their toxicity was limited and only effective against cultivators below the True Immortal realm. After True Immortals reshaped their immortal bodies, these mushrooms were basically ineffective.

"That's right." Lu Yuqing said excitedly.

As she spoke, she flipped her hand and took out a verdant jade talisman, waving her hand to send out a stream of azure light into it.

Streams of green light emanated from the jade talisman, condensing into a verdant light wall.

On the light wall was a map, pieced together from more than a dozen different colored sections. It didn't look complete, as if it was only about half of a complete map.

"Is this the map of the Youhan Territory that your Blackwind Island collected?" Han Li looked at the map for a moment and asked.

"That's right. According to the information we collected on Blackwind Island, the Youhan Territory is made up of nearly a hundred regions with different climates and environments. Unfortunately, I only got the map information for a dozen or so of these regions." Lu Yuqing nodded and said.

Han Li thoughtfully nodded, his gaze scanning back and forth across the light wall.

This map was very detailed. Some environments of different regions were vividly depicted. It was possible to generally determine the specific situation of those places from the map.

But he didn't find the map of the blizzarding ice field, black mountain range, or black sea that they had just passed through.

"I don't know the locations of the three areas we passed through before, otherwise we wouldn't have been so passive before." Lu Yuqing seemed to see Han Li's doubts and said.

"Then where are we now?" Han Li asked again.

At this moment, he had a general impression of the Youhan Territory.

"Here. This black Gobi area is called Blackrock Gobi. According to the information we've collected, although there are three or four Gobi areas in the Youhan Territory, only this Blackrock Gobi grows a lot of Mocloud Mushrooms. We should be here now." Lu Yuqing pointed her finger again, pointing to a black area near the top.

"It's good to be able to find the location. It's too dangerous to wander around in this Nethercold Immortal Palace like headless flies." Han Li nodded.

"Actually, Blackrock Gobi is a relatively safe area among these dozen or so areas. There are neither the cold beasts we saw before, nor large-scale dangers such as storm cold currents." Lu Yuqing said.

"Then we're lucky not to have been teleported to a dangerous area right away." Han Li said noncommittally.

"Brother Han is right. Our luck is indeed very good." Lu Yuqing smiled meaningfully and said.

"Oh? What do you mean by that, Miss Lu?" Han Li raised his eyebrows slightly and asked.

"Brother Han, do you see this place?" Lu Yuqing pointed again to the top of the Black Gobi area, where there was a large yellow area, the edge of the map.

"Is there anything special about this place?" Han Li glanced at it and asked.

"That's a desert area. We call it the Endless Sand Sea. It's considered the end of the northernmost part of the Youhan Territory." Lu Yuqing said.

"So what? Could there be any heavy treasures in this Endless Sand Sea?" Han Li asked with some doubt.

"Whether there are any heavy treasures there, I'm not sure. But Brother Han, you already know that in addition to the Youhan Territory, there are other unexplored territories within the Nethercold Immortal Palace. And the passage from the Youhan Territory to other territories is said to be in this Endless Sand Sea." Lu Yuqing shook her head and said eloquently.

"Is this true?" Han Li's heart stirred when he heard this.

"Of course it's true. Actually, the various areas in this Youhan Territory have been explored by cultivators entering the Immortal Palace over the years. I originally intended to go to other territories to see the world, but I couldn't find the location of this Endless Sand Sea. I didn't expect that we made a mistake in taking the teleportation array and unexpectedly arrived near here. Isn't our luck good?" Lu Yuqing said excitedly.

"That's really good. Then let's not delay and set off now." Han Li's eyes flashed slightly, and he turned around and flew back to the Azure Luan Flying Boat.

In the Youhan Territory, which had been searched countless times, he had already obtained so many treasures. If it were other unexplored territories, who knows how many treasures and opportunities there would be.

Lu Yuqing also put away the azure jade talisman and flew back to the Azure Luan Flying Boat.

Han Li activated a stream of azure light, and the Azure Luan Flying Boat shone brightly. Two rows of azure spirit feathers flashed on both sides of the flying boat, and it flew forward.

Three days later.

A vast yellow sea of sand appeared in front of Han Li and Lu Yuqing.

As far as the eye could see, the sand in the sea of sand was light yellow, crystal clear, reflecting the sunlight in the sky, giving people a dazzling feeling.

At the same time, waves of heat surged towards them, making their mouths and tongues dry. This sea of sand was like a furnace.

"Is this it?" Han Li looked around and asked.

"That's right, this is the Endless Sand Sea." Lu Yuqing looked at the sea of sand in front of her, her beautiful eyes sparkling, seemingly excited.

"This Endless Sand Sea doesn't look like a friendly place. Miss Lu, do you know what dangers are inside?" Han Li didn't rashly enter, but looked at the sea of sand in front of him and asked.

"Brother Han has sharp eyes. There are indeed many dangers inside. This desert is full of fire poison. As soon as you step into it, you will slowly be poisoned. Even Golden Immortal cultivators can't escape." Lu Yuqing smiled slightly and said.

"Fire poison? I guess it's not ordinary fire poison." Han Li frowned slightly.

"Indeed, ordinary elixirs can't resolve it at all. Only by finding a water spirit place in the desert and using the special water spirit energy there can the fire poison be gradually neutralized. If you can't find a water spirit place in time and the fire poison is too deep, even a Golden Immortal cultivator may die there." Lu Yuqing said with a solemn expression.

"Besides that, what else?" Han Li asked again.

"Besides the fire poison, it is said that you will occasionally encounter mirage illusions in the desert, which are extremely powerful and will cause people to lose their way and be unable to leave the desert. It is precisely because of these two major dangers of fire poison and illusions that this endless desert is so notorious. In the past, few people who entered the Nethercold Immortal Palace dared to set foot in it." Lu Yuqing continued.

"It seems that this is indeed a dangerous place with a slim chance of survival. The passage to other territories is somewhere in this Endless Sand Sea?" Han Li nodded, then asked.

"The passage is deep in the Endless Sand Sea, but Brother Han doesn't have to worry. I have a map of the Endless Sand Sea in my hand. As long as we are careful and follow the map, it won't be difficult to find the passage." Lu Yuqing took out a jade slip and handed it over.