The abundant vitality and life force brought by the Phoenix Agate kept Su Shi'er's physical body from being destroyed.
But it also left the blood and qi within him insubstantial.
After all, the Phoenix Agate had now replaced his heart and was mobilizing the blood and qi throughout his body.
On one hand, the Phoenix Agate was an external object to begin with—a great medicine containing dense blood and qi and life force, not a heart.
On the other hand, this great medicine contained Phoenix essence blood. The blood and qi transformed through it were inevitably tainted with traces of Phoenix Aura.
This was entirely different from the blood and qi originally within Su Shi'er's body.
It was only because, when the Phoenix Agate first entered his body, it had suffered the immense pressure of Demon God Xuantianjun's aura that the Dragon Qi in Su Shi'er's body had fused with the Phoenix Aura within the Phoenix Agate.
That could be considered a blessing in disguise.
Otherwise, his current problem would not have been as simple as insubstantial blood and qi.
Instead, they would have been utterly incompatible, and the blood and qi transformed by the Phoenix Agate might not have been accepted by his physical body at all.
If that truly happened, the Phoenix Agate could only barely keep Su Shi'er's physical body from perishing.
Even the slightest stirring of his blood and qi would further damage Su Shi'er's physical body, and it would be impossible to sustain this for long.
Yet now that the Phoenix Aura and Dragon Qi had fused, although the blood and qi in his physical body were insubstantial, the situation was actually improving little by little.
If he could enter seclusion and cultivate diligently, he would surely be able to accelerate this process. But even