《三国志·魏书·二公孙陶四张传》
匈奴单于想背叛袁绍，但张杨没有同意。
单于欲叛绍，杨不从。
The Xiongnu Chanyu wanted to betray Yuan Shao, but Zhang Yang did not agree.
<s>[INST] Kindly elucidate the central themes in this passage in English: 单于欲叛绍，杨不从。 [/INST] The Xiongnu Chanyu wanted to betray Yuan Shao, but Zhang Yang did not agree.</s>
Kindly elucidate the central themes in this passage in English: 单于欲叛绍，杨不从。
user
The Xiongnu Chanyu wanted to betray Yuan Shao, but Zhang Yang did not agree.
assistant