Under the threat of death, Peder was very spineless. Not only did he tell Dudian everything, but he also helped Dudian to plan how to sneak into his hometown.
Dudian put the wristwatch on his wrist. Through Peder’s introduction, he already knew the usage of the wristwatch. He also knew what the data on the wristwatch represented, it was the comprehensive data of the physique. He could roughly judge the strength of the enemy but it was not 100% accurate. For example, if someone like him knew how to hide his life energy then it would be very difficult for the wristwatch to detect all of it, it would give the wrong information.