ASCII byte is 7 bits. 8 bits is an octet.

1 floppy = 1.44 MO
1 CD = 700 MO
1 DVD = 4,7 GO
1 HD DVD = 15 GO
1 Blu-Ray = 25 GO

For China:

• TikTok is called there Douyin
• WeChat
• microblogging is mainly done on Sina Weibo
• Baidu Baike (by Baidu search engine) is counterpart of Reddit?

Not actually the region you asked about, but wykop.pl is actually larger in Poland, than Reddit.

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On /kbin you can flag your content as 18+/NSFW when adding it. You can also flag your magazine (equivalent of Lemmy community) the same way, when creating it.