Bloodline Manifestation represented that the bloodlines within a martial artist had already been nurtured and strengthened, and could be used to forge meridians.
At that moment, the four streaks of blood light erupting from behind Ye Zhen represented that his bloodlines had already manifested. The only difference was that two of those streaks rose straight into the sky like columns of wolf smoke, more than ten times thicker than the other two bloodlines, with faint golden and black radiance shining from them.
That was because those two bloodlines had already forged meridians. However, it did not mean that Ye Zhen's cultivation had already broken through to the Pulse Forging Realm.
Only when Ye Zhen's cultivation reached the peak of the fifth level of the Soul Sea Realm and connected heaven and earth could he break through to the Pulse Forging Realm.
Of course, that applied only to Ye Zhen.
For ordinary martial artists seeking to break through to the Pulse Forging Realm, the first step was to forge their meridians. After successfully forging them, they needed to connect heaven and earth. Only after doing so could they be considered to have officially broken through.
But for Ye Zhen, all he needed now was to connect heaven and earth in order to officially advance into the Pulse Forging Realm.
Connecting heaven and earth here did not mean truly connecting the heavens and the earth. The "heaven" and "earth" in this case referred respectively to the Soul Sea and the dantian.
The Soul Sea was heaven, the dantian was earth, and the successfully forged bloodlines were the passageways that connected them.
Only after connecting heaven and earth could one be considered to have truly broken through to the Pulse Forging Realm. At the same time, this was why Divine Ability Martial Skills