C191 Treasure Jade Slip!

"Whose idea was this?" Gu Beiyun asked, noticing his lively demeanor, a slight smile tugging at his lips as he sat down on the stool.

"Who else but me could come up with it?" Gu Zhuohua replied with a cheeky grin, looking every bit like the clever sibling.

"You..." Gu Beiting said, half amused, as he picked up the cushion to inspect it