Inside the secret chamber, numerous arrays activated, the defensive formation's barriers enveloping the entire chamber.
Even though he was back in Cang Mountain Family, Su Yu never let his guard down. Whenever he could cultivate inside the secret chamber, he would, and during his training time, all the arrays that could be activated were activated.
As for cultivating on mountaintops, large stones, or treetops, even though it looked impressive, Su Yu felt there was a significant safety risk.
After all, a moment's distraction could result in death, not just practice.
"Hummm!"
At this moment, Su Yu was operating the second level of the Foundation Establishment Realm's Earth-Wood Technique. Instantly, the disconnected Green Wood Mana and the Profound Earth Mana in his Dantian were stimulated and flowed out. These two types of mana traveled throughout his body via his meridians, while strands of verdant green and dark brown mana merged, instantly becoming one.
"Boom!"