Long Ziling worshiped the wild and domineering nature of dragons, so her Blood Qi took the form of a dragon.
The living Bodhisattva practiced the Buddhist Law, hence the Blood Qi's transformation manifested as an Ancient Buddha.
At this moment, behind Tang Yi, the Blood Qi had incredibly taken the shape of someone identical to himself. What did this suggest? It indicated that Tang Yi did not worship any idols; he neither bowed to the heavens nor the earth nor revered the myriad gods and Buddhas. His adoration was only for himself.
This wasn't just a matter of speaking. What a martial artist's Blood Qi transforms into represents their true thoughts, so there was no deception possible.