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https://www.android-apk.com/2019/08/telegram-5-10-%e5%8a%a0%e8%a8%ad-silent-messages-slow-mode-%e5%a4%9a%e9%a0%85%e5%8a%9f%e8%83%bd/
Telegram 5.10 加設 Silent Messages, Slow Mode 多項功能 - https://www.android-apk.com/2019/08/telegram-5-10-%e5%8a%a0%e8%a8%ad-silent-messages-slow-mode-%e5%a4%9a%e9%a0%85%e5%8a%9f%e8%83%bd/