A race's true form was something sacred, especially powerful races who have a lot of rivals and enemies. If someone knows your race, they know your weakness, and they can use that against you. So unless it is absolutely life and death, not even then. Unless it was the life and death of the entire race, a practitioner would never reveal his race. When they are about to die, it is common practice to self-destruct and not leave a body behind.
Though it was not the same in this situation as everybody knew what race each other was. Revealing one's race signified that the opponent was taking this fight seriously.
Quaker fired off a crescent-shaped sword aura to slow the attacks on and got inside his aura sphere. The attacks landed on the sphere, causing the sky to quake. Quaker showed up unscathed, yes, but he was furious as he almost died. The sphere he stood in was full of cracks. He cannot take another joint attack like that.
