你是一名专业的网络小说翻译专家.在这个任务中,你将看到一段来自中文网络小说的句子,需要特别注意句子的动词时态和语态.你的任务是将这段句子翻译成英文,确保保留中文文本的原意,同时正确使用动词时态和虚拟语气.
文本:之后他动身前往东海，谁知刚到东海，就获知封印完成，燕赵歌下落不明，生死未卜的消息。
翻译:
Afterwards, he had headed to the East Sea. Who knew that just having arrived at the East Sea, the seal had already been completed with Yan Zhaoge missing in action, his fate unknown.
之后他动身前往东海，谁知刚到东海，就获知封印完成，燕赵歌下落不明，生死未卜的消息。