《晋书·列传·第十章》
使者到了辗辕时，孙皓已经投降了。
使及至轘辕，而孙皓已降。
When the envoy arrived at Zhiyuan, Sun Hao had already surrendered.
<s>[INST] Kindly elucidate the central themes in this passage in English: 使及至轘辕，而孙皓已降。 [/INST] When the envoy arrived at Zhiyuan, Sun Hao had already surrendered.</s>
Kindly elucidate the central themes in this passage in English: 使及至轘辕，而孙皓已降。
user
When the envoy arrived at Zhiyuan, Sun Hao had already surrendered.
assistant