求英文高手翻譯%…… 急啊……

The knights first held the competition of gun-shooting on horse (其實我也不知道英語是啥，大概就是那些人壹邊騎著馬，壹邊向對方開槍吧），two riders moved toward each other. When one of them had been shot down on to the ground, they can continue fighting on the ground until the chairman insisted them to stop.