章 339: Pranks

Ear piercing scream rang out in the middle of the night. 

Feng Yu Hua, who was watching the scene from the monitoring, laughed out loud when she watched the two men screaming out loudly.

She looked at Nan Hua and showed thumbs up. "Your idea is very good!"

Nan Hua passed a look at Feng Yu Hua and shook her head slightly. She was sure that if they were normal students, their teacher would be crying if they knew that these two were using chemistry lessons they learned for pranks.

"I'm rather surprised you have Phenolphthalein here," Nan Hua replied.

Feng Yu Hua grinned. "It's easy to buy because it has no other use aside from the acid and alkaline indicators."

"Meow~." Xiao Hei had returned from the window and looked at these two with tilted head.

For the person's image, she asked Xiao Hei to go there while cover his head with the blanket. This would make it harder to see the real image of Xiao Hei and looked more like a head and body.