C1081 Tentatively accepted
Those few demon race members did indeed carefully sense Gao Peng's bloodline. Although Gao Peng did not immediately reveal the power of his bloodline at this time, flowing blood was not wrong.
To use the power of one's own bloodline, one could make their entire body possess that kind of aura. Thus, even if he did not use it much, as long as he did not try to control it intentionally