As they sank deeper and deeper, Zhang Tie felt the pressure the surrounding magma exerted on his protective Battle Qi growing stronger and stronger.
The situation was somewhat like that of a diver descending into the deep sea—the farther down one went, the greater the pressure brought by the seawater.
Only, what Zhang Tie faced now was not seawater, but scorching magma.
At the same depth, because magma was denser than water, the pressure it exerted was roughly two and a half times that of water. The Azure Wave Palace of the Blood Soul Temple lay about 5,000 meters beneath the magma. The pressure there was equivalent to that at a water depth of more than 12,500 meters. Below the knight level, even a Battle Spirit with protective Battle Qi would instantly be crushed to pieces in such an environment. Even knights would never have an easy time at such depths.
Before the Great Cataclysm, the maximum diving depth that underwater robots and some submarines invented by mankind could withstand was roughly 12,000 meters. Beyond that depth, the pressure of seawater imposed even harsher challenges on the materials, processes, and manufacturing techniques of submarines and underwater robots. If a massive solid iron sphere several meters in diameter were dropped to a depth of over 10,000 meters, the tremendous pressure of the water could even compress its diameter by an entire size.
Han Zhengfang's intention in using the Blood Soul Temple's secret art, "Binding," to tie Zhang Tie to himself and drag him deeper into the magma was to use the might of heaven and earth within the natural environment to crush Zhang Tie to death.
A Phantom Knight's protective Battle Qi was absolutely stronger than an Earth Knight's. Under the same pressure, Han Zhengfang was confident that he could endure