How to create a business channel on Telegram? (Tutorial) The optimal dimension of the avatar on Telegram is 512px by 512px, and itโs recommended to use PNG format to deliver an unpixelated avatar. With the administration mulling over limiting access to doxxing groups, a prominent Telegram doxxing group apparently went on a "revenge spree." A Hong Kong protester with a petrol bomb. File photo: Dylan Hollingsworth/HKFP. Ng Man-ho, a 27-year-old computer technician, was convicted last month of seven counts of incitement charges after he made use of the 100,000-member Chinese-language channel that he runs and manages to post "seditious messages," which had been shut down since August 2020.
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