固定单双公式规律简介：The two hundred cavalrymen followed him. They walked slowly at first, raising their horses, and when they reached the two hundred paces, they accelerated sharply, their iron hooves rolling, and they rushed towards Jianlu.
The two hundred cavalrymen followed him. They walked slowly at first, raising their horses, and when they reached the two hundred paces, they accelerated sharply, their iron hooves rolling, and they rushed towards Jianlu.
