大单小单大双小双

简介：The grassland at the turn of spring and summer is when the sky is clear and the grass is lush and the horses are fat. Generally speaking, wars will not happen at this time, but this year it is strange, because the Waldus Mongolians are fighting against Baichengzi. The fierce attack on the Hetao grassland outside the Great Wall ushered in a rare battle in this season.