Hearing this, Chen Xiaojun could not help but give a wry smile.
Who would go and push their limits for no reason, burning their blood and vitality?
That came at a price.
However, a thought suddenly flashed through his mind. Limits? The limits of blood and vitality? Strengthening the heart and lungs? Demon Slayer Mark?!
Chen Xiaojun's eyes lit up sharply. In the original Demon Slayer, after awakening the Demon Slayer Mark, one's combat ability could rise dramatically, and patterns symbolizing the mark's activation would appear on the user's body.
Different marked swordsmen had different Demon Slayer Marks on their bodies.
And the conditions for awakening the Demon Slayer Mark were a body temperature of thirty-nine degrees and a heart rate exceeding two hundred beats per minute—in other words, high body temperature and high heart rate!
At that moment, the human body would become so scorching it seemed about to burn, and whether one could survive after entering such a dangerous state was the key to determining whether a Demon Slayer Mark would appear on the body.
Chen Xiaojun pondered inwardly. Perhaps this was their chance to break through that sense of restraint and reach a higher realm of the breathing technique!
At this thought, Chen Xiaojun could hardly suppress the excitement in his heart. He sprang up from his seat, grabbed Xiao Yi, and hurried outside.
"Where are we going?" Xiao Yi asked as she kept up with him.
"The Cultivation Room," Chen Xiaojun answered briefly.
Within this large courtyard, several small cultivation rooms were arranged in neat disorder—not for soul masters to spar with one another, but for people to meditate quietly and cultivate with focus.
Although one could cultivate in one's own room as well, the effect was not as good as here.
The reason was simple.