The blood and Qi could be increased by increasing the circulation of blood. There were numerous things to do, such as taking medicines like ginseng or taking hot medicinal baths.
These could increase his blood and Qi as well. Even eating beast meat can increase his blood and Qi.
While training could also increase the blood and Qi, however, it was very slow—in fact, it could be said to be the slowest method to use training to increase his blood and Qi. That might be also the reason why Aur's training wasn't getting much results as in the past.
Thinking of this, Aur frowned. "I should visit the market again and not let my impulse control me."
Aur could have avoided the trouble by simply ignoring it, like his past self when he used the future seer: minor to see a possible variation of what would have happened if Aur hadn't gone to save the girl as well.
However, that path would have directly contradicted his choice to live as he wanted.