C738 Four cushion

These four prayer mats looked to be very ordinary objects, but after going through Hua Shan's sandalwood armchair and the study room's armrest that was inlaid with Jade Slip, Fang Yunlong observed them even more carefully. After some research, Fang Yunlong finally found something fishy.

Actually, these four praying mats were also a special kind of Jade Slip