For now, it seems quite effective.
First, merge the Yang energy into the blood and qi, then let the blood and qi integrate back into the Yang energy. Finally, the body's power is twisted together like a rope, creating a separate human circulatory system.
When Wen Yan was expanding to the limbs earlier, it went very smoothly, purely through persistent effort.
He took the offerings from Grandma and relied on Blood Lock to endure it because if any problems arose in the expanded areas, they mainly affected just the limbs.
Even if there were issues with the limbs, they wouldn't immediately be fatal.
But now that he was expanding to the torso, moving from the outside inwards, Wen Yan noticed problems.
Especially when Bai Jiahui assisted him in cultivation, the blood and qi were fierce and hard to control.
When expanding and connecting to the five organs, he noticed the limitations of his previous methods.
