《三国志·魏书·荀彧攸贾诩传》
就答应袁谭和他联姻，然后率军回击袁尚，顺利打败了他。
乃许谭和亲，遂还击破尚。
He agreed to marry his daughter to Yuan Tan, and then led an army to attack Yuan Shang and defeated him.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 乃许谭和亲，遂还击破尚。 [/INST] He agreed to marry his daughter to Yuan Tan, and then led an army to attack Yuan Shang and defeated him.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 乃许谭和亲，遂还击破尚。
user
He agreed to marry his daughter to Yuan Tan, and then led an army to attack Yuan Shang and defeated him.
assistant