《太平广记·卷七十一·道术一》
有一次，葛玄曾随吴大帝乘船走，遇到了大风，百官的船无论大小都沉没了，葛玄的船也淹没不知哪里去了。
常从帝行舟，遇大风，百官船无大小多濡没，玄船亦沦失所在。
Once, Ge Xuan sailed with Emperor Wu, who encountered a strong wind, and the boats of all officials, regardless of size, sank. Ge Xuan's boat was also submerged and did not know where it went.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 常从帝行舟，遇大风，百官船无大小多濡没，玄船亦沦失所在。 [/INST] Once, Ge Xuan sailed with Emperor Wu, who encountered a strong wind, and the boats of all officials, regardless of size, sank. Ge Xuan's boat was also submerged and did not know where it went.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 常从帝行舟，遇大风，百官船无大小多濡没，玄船亦沦失所在。
user
Once, Ge Xuan sailed with Emperor Wu, who encountered a strong wind, and the boats of all officials, regardless of size, sank. Ge Xuan's boat was also submerged and did not know where it went.
assistant