The leader in black entered a password in front of the door, and the door slowly opened.
Inside was a huge laboratory filled with all sorts of strange instruments and bottles and jars.
"What are these?" The Nine Nether Butterfly was full of doubts.
At this time, Mo Xi and Mu Li also saw the scene in the laboratory through the perspective of the Nine Nether Butterfly.
"It seems that this is their secret base." Mo Xi said.
"Then what should we do?" Mu Li asked.
"We'll wait until they let down their guard before we take action," said Mo Xi.
The Nine Nether Butterfly carefully observed its surroundings, waiting for its opportunity.
After a while, the men in black seemed to relax and began to get busy.
"Now!" said Mo Xi.
The Nine Netherworld Butterfly suddenly broke away from the black-clothed leader, flew into the air, and returned to its original size.
"What is that?" the men in black were shocked.
Mo Xi and Mu Li also emerged from the space.
"Hmph, you evil guys, today is your doom!" Mu Li said loudly.
The black-clad leader sneered, "Just you? You don't know your own limitations!"
A fierce battle broke out again.
Mo Xi and Mu Li cast powerful spells and fought a desperate battle with the men in black.
Lights flickered in the laboratory, and the sound of spells colliding was deafening.
In the fierce battle, Mo Xi's movements were as fast as lightning, and every attack was accompanied by a fierce momentum, pushing back the black-clad men before him. Mu Li, on the other hand, nimbly shuttled between the enemies, the magic weapon in her hand bursting with brilliant light, posing a considerable threat to the enemy.
"Everyone, come together and don't let them run away!" The leader in black roared, commanding his men to launch a more fierce attack on Mo Xi and Mu Li.
However, Mo Xi and Mu Li worked together in perfect harmony, and for a while the man in black could hardly gain the upper hand.
"This is not a solution. We must get rid of the leader first!" Mo Xi shouted to Mu Li.
Mu Li understood what he meant and attacked the black-clad leader together with Mo Xi.
Seeing this, the black-clad leader's face changed drastically, and he quickly cast a powerful defensive spell. However, under the joint attack of Mo Xi and Mu Li, his defense gradually collapsed.
"Ah!" With a scream, the leader in black fell to the ground.
When the other men in black saw that their leader had been defeated, they immediately lost their composure.
"Take advantage of now and end this quickly!" Mo Xi shouted.
Mu Li and Mo Xi took advantage of the victory and quickly subdued all the men in black.
"It's finally over." Mu Li said panting.
Mo Xi looked around and said, "Let's see if there are any clues here."
They searched the laboratory carefully and found some documents and experimental records about the conspiracy of a mysterious organization.
"So they have been carrying out such an evil plan." Mu Li said angrily.
Mo Xi frowned: "We must take this evidence back and let the world know their crimes."
Just then, an alarm suddenly sounded in the laboratory.
"Oh no, there may be other mechanisms." Mo Xi said.
They sped up the collection of evidence and prepared to leave.
However, the door to the passage suddenly closed, and poisonous gas spewed out from all directions.
"Hold your breath!" Mo Xi shouted. Upon hearing that, Mu Li pulled Mo Xi into the space.
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