"What should we use?" Shan Lu asked and looked at them. His eyes are clear... 

Tang Zhe. "…" I just said we should brainstorm, so why ask only me? "I'm still thinking… do you have any idea?" he asked and his gaze fell on Wu Xi after he saw Guo Cheng and Tang Yun were already thinking.

It's only the idiot Shan Lu who can't keep up with them.

Wu Xi raised his Thought Talisman. "It should be eye-catching." He answered.

Guo Cheng saw it. "Eh? If it'd be eye-catching, won't we be exposed?" he asked.

Wu Xi turned to him. "We won't be if we throw it." he answered. 

Guo Cheng. "…" what's with this suffocating feeling? I get it. Now, I get it. Really! Cheng Sheng and his friends are all stifling! Whether their words are intentional or not, but they just make you feel stifled! "Oh." He muttered. Then, he looked at the others.

Tang Zhe, who was bearing a heavy responsibility to keep them all safe and alive, and Tang Yun who wants to help Tang Zhe the best as he can, both are immersed in thinking so they didn't notice Guo Cheng's gaze that's seeks help from them.

Guo Cheng. "…"

And the only one who can help him deal with the psychological shadow Wu Xi gave him is –

"Hm? Guo-shidi, are you alright? Why do you look strange? Were you injured earlier?" Shan Lu asked when he saw Guo Cheng's dark expression. His eyes are filled with worry as he raised his hand to check Guo Cheng's limbs if Guo Cheng suffered an injury.

"… I'm fine." Guo Cheng sighed as he pushed back Shan Lu's hand.

"Oh." Shan Lu muttered when he saw the color in Guo Cheng's face returned, but he looked even more tired than before. "Have you thought of a solution?" he asked. He admits he isn't smart.

"I am afraid these insects are blind." Guo Cheng said.

Tang Zhe and Tang Yun turned to him. "That is possible." Tang Zhe said.

"Then, the signal we should use be related to sound?" Wu Xi asked.

Guo Cheng nodded. "We can use an explosion." He said before he smiled. "It's very eye-catching, and we can be sure these insects would hear it." he told them.

"…" he's a devil. They thought as they looked at Guo Cheng's harmless-looking smile. "Where should we find something that could explode…" their voice faltered when they remembered something.

"That's right." Guo Cheng said as he took out a box from his qiankun sleeve. "This is Cheng Sheng's Exploding Pill. I am curious about it and want to experiment on it, since I felt I wanted to also try pill refining, so I bought one from him." he said as he opened the box and they saw the box was stuffed and a magic pill was at the center. "He told me that the Exploding Pill can't be bumped, or it'll explode when it hits something unlike the other medicinal pills, thus its container has to be stuffed…" he explained.

Everyone. "…" but what if the magic pill was accidentally hit?! Wasn't keeping it just asking for death?!

Guo Cheng saw them feeling speechless. "…" his lips curled up. So I can make others feel stifled, too! "Let's try?" he asked as he raised the box before them.

"…" they immediately stepped back.

Tang Zhe cleared his throat. "Guo-shidi, you do the honor. You're more familiar with the process…" he said.

"Okay!" Guo Cheng said as he carefully picked up the magic pill from the box using his index finger and thumb, then flicked it to the area where the insects swarmed the most.

BOOOOOOOOOMMMMM!!!

Chen Han and Li Tian was startled by the loud noise and they sharply turned. The walls and the ground shook! "What was it..." they muttered before they paused and then looked at each other. "Could it be…?" their eyes widened in excitement.

Cheng Sheng?! They immediately went out of their hiding to look outside. The insect right above them crawling on the wall already disappeared as they gathered to the source of explosion.

"Ah Sheng?!" Chen Han called out, his voice was swallowed by the sound of the rocks falling.

"Eh?! Someone's really here!" a familiar voice said. "That voice… Chen Han?!" Tang Zhe exclaimed as they squint in the darkness to the direction of the voice.

"Tang Zhe?!" Chen Han was shocked. He turned to Li Tian.

"It was the Huakai Sect?!" Li Tian was as shocked as him. They didn't expect to meet the missing Huakai Sect here.

"That voice… sounds familiar… eh, Wu Xi. It was Li Tian?! Li Tian's with Chen Han?! They're really together?!" it was Guo Cheng who spoke after he saw Wu Xi's Thought Talisman he raised when he identified Li Tian's voice.

"Wu Xi's with you?!" Li Tian was surprised.

"Tang Zhe! Why do you have Ah Sheng's Exploding Pill?" Chen Han asked as he and Li Tian flew towards the Huakai Sect, using the opportunity the insects' attention was caught by the explosion.

"Chen Han!" Tang Zhe was pleasantly surprised.

"It was me who bought the magic pill." Guo Cheng explained.

Chen Han nodded at him. "How did you know Ah Tian and I are there?" he asked.

"We saw the broken bridge. We thought someone used it – " Tang Zhe honestly answered.

Chen Han's brows knitted. "If someone really used it and it broke, then shouldn't they have fallen to the abyss now?" he asked.

The Huakai Sect. "…" ah. We didn't think of that. They looked at each other.

Tang Yun cleared his throat to save their face. "Can't they fly? Don't we have swords?" he asked.

Chen Han knows not to rip their face further. "En. Possible." He just said and then turned to nod at Wu Xi before he turned to the Huakai Sect. He glanced at their neck and saw that they also have taken off their Cleansing Stone. "After Ah Sheng told us to remove our Cleansing Stone to deal with the impostors, there's another news." He said. "Ah Sheng felt, through his arrays in Zhongyang, that the Zhongyang was under attack by the demonic cultivators. Yu Sheng confirmed it using his life-and-death pact with Zuo Zhe." He told them. Then, he paused as if he remembered something. "Oh, and one more thing. An elder in the Alliance is a traitor." He added.