peerInfo.Confirm.ClearHistory.Group

This will delete all messages and media in this chat from your Telegram cloud. Other members of the group will still have them.
127
Applied
此操作将会从您的 Telegram 云中删除此群组的所有消息和媒体,但其他群成员储存的内容仍将被保留。
51/127
Deleted Account, Jan 25, 2019 at 05:19