A month passed by since Jade managed to get his sentient weapon and reach 7th grade. During this one month, Angus didn't get out of the inn too much. He decided to focus on refining and to cultivate his chi.
After Jade's weapon sentient incident, Angus consumed more than half of his chi to fight against the intruders. The domain is worthy to be called as the pinnacle technique of martial art in Angus's past life. Just by utilizing it, he could fight on par with a high-grade combatant.
However, the chi consumption for its usage is enormous. If Angus didn't have the mysterious heritage chi to refill his chi, he probably needed to exhaust all his vitality to produce his current amount of chi.
Staying inside this dangerous dimension, Angus feels that he will never have enough no matter how much chi he has. Moreover, as the time for Endless Battlefield comes near, he feels the need to increase his strength further.