1 sentence

1. 他发现发错了群聊，赶紧撤回了那条消息。

   tā fā​xiàn fā​cuò le qún​liáo, gǎn​jǐn chè​huí le nà tiáo xiāo​xi.

   He realized he'd sent it to the wrong group and quickly recalled the message.

   Source: Dong Chinese Dictionary