《明史·志·卷六十七》
当时俺答更加强盛，朵颜三卫焉他们引路，辽、蓟、童、左连年遭受兵祸。
时俺答益强，朵颜三卫为之向道，辽、蓟、宣、大连岁被兵。
At that time, An Da was even stronger, and the three guards of Doyan led the way, and Liao, Ji, Tong, and Zuo suffered military disasters for many years.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 时俺答益强，朵颜三卫为之向道，辽、蓟、宣、大连岁被兵。 [/INST] At that time, An Da was even stronger, and the three guards of Doyan led the way, and Liao, Ji, Tong, and Zuo suffered military disasters for many years.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 时俺答益强，朵颜三卫为之向道，辽、蓟、宣、大连岁被兵。
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At that time, An Da was even stronger, and the three guards of Doyan led the way, and Liao, Ji, Tong, and Zuo suffered military disasters for many years.
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