The Fire Saint was on a rampage; she truly wanted to tame a mount.
The Black Dragon King was indeed a black dragon, though its bloodline was thin and it wasn't a purebred Dragon Clan.
Nevertheless, its power wasn't weak, being in the Saint Lord Second Layer Heaven, making it a fine choice for a mount.
The Black Dragon King realized it was difficult to escape, so he went all out and directly fought the Fire Saint.
Within less than ten moves, he was slapped down by the Fire Saint and couldn't get up, her strike almost dispersing all his power.
Afterward, the Fire Saint walked up to the Black Dragon King and began to exert her skills.
"What do you want to do?"
The Black Dragon King was terrified, staring at the Fire Saint, feeling somewhat horrified.
"To place a restriction on you; in the future, if you disobey, I can send you to your death with a single thought."