บท 266: Preparing for War (XI)

"Using fantasy card images to pass things down?" Professor Wen knitted his brow in thought. "That was the tradition in the period of the sects. Some of the sects at the time had really mastered low-grade fantasy cards and could use that style of passing things down. It was only an auxiliary method, though. In order to prevent the situation of accidentally passing things along by word of mouth, I don't hear of anyone using it by now."

"Mmmm, please continue."