Conversation.ClearSelfHistory

This will delete all messages and media in this chat from your Telegram cloud.
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這將從您的 Telegram 雲端刪除這個對話的所有訊息和媒體。
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𝓓𝓸𝓻𝓪𝓶𝓲 2F6FBA1D 🇹🇼, Dec 13, 2018 at 18:54