Red Dust's speculation was somewhat off the mark.
Indeed, the player who received the [Poison Doctor] secondary profession was the same brother who publicly brawled and thrashed Yelang on the [Extraordinary Battlefield].
Where he guessed wrong was that [Poison Doctor] is not a hidden secondary profession, but a legitimate combat profession.
However, this combat profession comes with a secondary profession of the same name.
Of course, you can also say that the [Poison Doctor] secondary profession comes with a combat profession of the same name.
Either way, it's the same.
However, the combat profession hasn't been unlocked yet, so his master didn't teach him combat techniques.
Because of this, if he were someone else, he would be fatally wounded in the next second—
The Capital Commandant, although poisoned severely and coughing blood, didn't die immediately. After gasping for breath, his sword came slashing out!