When Zhang Xiaohua received the Jade Water Sword from Si Yakong, the leader of Casting Artifact Sect, he had used his Divine Sense to inspect it. However, he hadn't inspected the sword sheath that was still in Si Yakong's hand. At this moment, he expanded his Divine Sense and barely took a glance, only to notice the strangeness of the sheath.
The peculiarity of the sword sheath wasn't due to the fluctuations of Vitality it emitted, which could attract Zhang Xiaohua's Divine Sense, but rather that when his Divine Sense passed through it, he surprisingly discovered a very well-hidden compartment within the base of the sheath. The compartment was tiny, perfectly hidden inside the sheath, and couldn't be seen with naked eyes.
