《史记·七十列传·大宛列传》
自从博望侯张骞死后，匈奴听说汉朝和乌孙有了往来，很气愤，想攻打乌孙。
自博望侯骞死後，匈奴闻汉通乌孙，怒，欲击之。
After Marquis of Bowang Zhang Qian died, the Xiongnu, having heard that the Han Dynasty had begun to communicate with Wusun, became very angry and wanted to attack Wusun.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 自博望侯骞死後，匈奴闻汉通乌孙，怒，欲击之。 [/INST] After Marquis of Bowang Zhang Qian died, the Xiongnu, having heard that the Han Dynasty had begun to communicate with Wusun, became very angry and wanted to attack Wusun.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 自博望侯骞死後，匈奴闻汉通乌孙，怒，欲击之。
user
After Marquis of Bowang Zhang Qian died, the Xiongnu, having heard that the Han Dynasty had begun to communicate with Wusun, became very angry and wanted to attack Wusun.
assistant