At this moment, Mu Li suddenly felt a powerful evil force surging in the distance.

"Brother Moxi, I feel something is happening over there." Mu Li said nervously.

Mo Xi frowned and said, "Let's go and take a look."

The two of them rushed in the direction of the force and came to a remote valley.

The valley was filled with thick black fog, making it impossible to see the road ahead.

"Be careful, Ali." Mo Xi warned.

Mu Li nodded, and the two of them walked forward cautiously.

Suddenly, a group of dark shadows emerged from the black fog and pounced on them.

Mu Li and Mo Xi reacted quickly and immediately cast spells to fight the black shadow.

Gradually, Mu Li felt something was wrong.

"Brother Crown Prince, are they impossible to kill? Look, I clearly dispersed them, but after a while they gathered together and rushed towards me!"

Mo Xi observed carefully for a while and nodded. "Look, every time we eliminate a shadow, the black fog in the valley becomes a little thicker, doesn't it?"

"That's true. What's going on?" Mu Li asked with a frown.

"Master, it's a formation!" the little white fox in the space reminded.

"What formation?" Mu Li was puzzled.

"Master, an evil cultivator has set up a Yin Gathering Formation here. He must be raising some evil creature!" Xiaobai replied.

"So is there any way to solve them?"

"Master, let the little phoenix go out. The little phoenix's nirvana fire can burn all filthy things." Xiaobai said.

Upon hearing this, Mu Li immediately summoned the Little Phoenix. As soon as the Little Phoenix emerged from the space, it flew towards the black fog, spewing blazing Nirvana Fire from its mouth.

Wherever the flames reached, the shadows instantly dissipated. As the shadows dwindled, the black fog gradually dissipated. Finally, a gigantic black monster appeared before everyone.

"This is... the Nine Yin Demon Spider!" Mo Xi recognized the monster.

It turned out that the evil cultivator had set up the Yin Gathering Formation here just to nourish the blood spiders.

At this time, the Nine Yin Demon Spider had absorbed a large amount of Yin energy and became extremely powerful.

Mu Li and Mo Xi exchanged a look, both startled. Mo Xi quickly cast a barrier to protect Mu Li behind him.

The little phoenix flew up and down around the Nine Yin Demon Spider, continuously spewing flames to attack it.

However, the Nine Yin Demon Spider's shell was extremely hard, and the little phoenix's flames could not cause effective damage to it for a while.

At this moment, the Nine Yin Demon Spider suddenly launched an attack, spitting out a black spider silk and shooting it towards the little phoenix. The little phoenix was unable to dodge and was entangled in the spider silk. Seeing this, Mo Xi immediately took action, shooting out a ray of light, cutting the spider silk and saving the little phoenix.

Mu Li was extremely anxious. She secretly activated her magic power and prepared to use her ultimate move.

She formed seals with her hands, and a golden light emanated from her body. The light grew brighter and brighter, finally transforming into a beam of light that blasted towards the Nine Yin Demon Spider. The Nine Yin Demon Spider was struck by the beam of light and let out a scream.

However, Mu Li's full-strength attack did not cause any fatal damage to the Nine Nether Demon Pearl, but instead angered it.

It glared blood-red, charging at Mu Li angrily, its mouth continuously spewing poisonous threads. Just as Mu Li was about to dodge, Mo Xi flashed in front of her, severing the poisonous threads with his sword, and engaged in a fierce battle with the Nine Yin Demon Spider...

"Brother Prince, be careful!" Mu Li said worriedly.

"Ali, please step back. Don't worry, I'm fine." Mo Xi took the time to respond.

Mo Xi struggled to resist the Nine Yin Demon Spider's attacks, but gradually felt the strain. He knew that this was not the way to go, and he had to find a way to get rid of this powerful enemy as soon as possible.

At this moment, Mo Xi noticed the weakness in the abdomen of the Nine Yin Demon Spider. He came up with a plan and decided to take a risk.

Mo Xi concentrated his energy and used all his strength to thrust a sword towards the abdomen of the Nine Yin Demon Spider. The Nine Yin Demon Spider felt pain and its movements became slow.

Mu Li seized the opportunity and cast another spell, sending a powerful beam of light directly into the Nine Yin Demon Spider's head. This time, the Nine Yin Demon Spider was unable to withstand the attack and fell to the ground with a loud bang.

Mo Xi and Mu Li breathed a sigh of relief and smiled at each other.

"Brother Prince, this Nine Yin Demon Spider has such a strong yin energy, it must be a creature from the underworld, right?" Mu Li asked puzzledly while looking at the Nine Yin Demon Spider on the ground.

"It is indeed something from the underworld!" Mo Xi nodded.

"Then why is he here? Did he escape secretly?" Mu Li frowned.

"Maybe it's because I haven't been here for too long, and some people are restless..." Mo Xi pondered.

"Brother Prince, will you be in danger?" Mu Li asked worriedly after hearing this.

"No, there are Meng Po, the Judge, the Black and White Impermanence in the underworld. They can't cause any trouble. They are just some jumping clowns! It's not too late to deal with them when we go back!" Mo Xi rubbed Mu Li's hair and comforted her.

"Then I'm relieved. After I complete this mission, we'll go home! I miss my brother, parents, master, and fellow apprentices!" Mu Li counted on her fingers, "And the Emperor and the Empress..."

"Okay." Mo Xi responded with a smile.

"Master, I found that evil formation, come quickly!" The voice of the little phoenix suddenly came in Mu Li's mind.

"Okay, I'll be right there."

"Brother Prince, Zizi said she found the Yin Gathering Formation. Let's go take a look!" Mu Li said as she pulled Mo Xi and ran towards the direction of the little phoenix.

"Who is Zizi?" Mo Xi asked curiously.

"It's the little chick that just spitted fire!" Mu Li explained.

"You said it's a fire-breathing chick?" Mo Xi's mouth twitched...

"It doesn't matter, it's my cub anyway..." Mu Li stuck out her tongue awkwardly and said with a stiff upper lip.

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