Huang Xiaolong flew above the God Burying River, looking down at the river's surface which was as calm as a wave, occasionally emitting wisps of dark red gas. These gases were extremely hot, and Huang Xiaolong tentatively took out a holy-grade top-level spiritual stone and threw it down.
As soon as it touched the dark red gas, the holy-grade top-level spiritual stone was transformed into a mass of spiritual energy.
Although not as hard as the divine-grade spiritual stone, the hardness of the holy-grade top-level spiritual stone was comparable to ten-thousand-year fine iron, yet it melted instantly.
Seeing this, Wan Long and the other three sucked in a breath of cold air.
The group became even more cautious.
Halfway through their flight, a faint sizzling sound suddenly rang around Huang Xiaolong's body. Everyone looked and saw a thumb-sized fiery red insect falling from the sky.
This fiery red insect, which had sharp fangs and a pointed tail, looked ugly.