阶梯倍投方法简介：Finally, how could it be so easy to blow up a city with gunpowder? If you can't master the trick, no matter how much gunpowder you put out, it will be nothing more than fireworks.
Finally, how could it be so easy to blow up a city with gunpowder? If you can't master the trick, no matter how much gunpowder you put out, it will be nothing more than fireworks.
