C469 Catenary meter(part ii)

However, just as I was about to leave, I suddenly saw a small box filled with dust in the most inconspicuous corner. I immediately went over and opened the box, only to find a blood-red herb.

Grand Preceptor Wen had found this herb when he was fighting against Jiang Ziya. He had initially planned to poison the immortal generals in Ji Fa's team, but to no avail