An Jing's True Spirit Blood, though successfully conceived with the aid of a Demon Core under the guidance of a Heavenly Revelation, is not wholly complete.
After all, An Jing's Spirit Root encompasses only 'Metal, Wood, Earth' elements, missing the Water and Fire elements. While the Fire aspect can be slightly supplemented by the Blood Fiend of Mars, the Water Spirit Root is truly absent, preventing the convergence of the five elements required for the Ancestral Dragon Seed within him to germinate.
In theory, An Jing could first advance his Martial Meridian, then through the interplay of the Heaven and Earth Root and the True Spirit Blood within him, upgrade himself to reach Perfection.
But making up for it later is still slower than having complete True Spirit Blood from the start.
Although An Jing has not thought so much about it, he still hopes to achieve full advancement as much as possible.
However, he has no good solutions, and can only take things one step at a time.