The Token of the Blood Emperor was once known as the calling from Yama. Where the Token of the Blood Emperor was, the family would end up in destruction.
The Token of the Blood Emperor was authentic, and it was impossible to have a counterfeit one. However, owning the Token of the Blood Emperor didn't necessarily make Lu Li the apprentice of the Blood Emperor. What if the Blood Emperor had lost one? What if he had died and Lu Li just happen to get one?
It had been several hundred years since the Blood Emperor made an appearance at the Central Imperial Universe. Nobody knew whether he was dead or alive. As one of the overlords at the Central Imperial Universe, Leng Family wasn't convinced that Lu Li was the apprentice of the Blood Emperor. If it turned out that Lu Li was fooling them, they would end up shamed.