@lilydjwg Sorry I can't do Chinese but this is fascinating (from what I was able to Google Translate).
Have you tried to WHOIS the IPs? Were there any headers with the requests? (Like, did they look like actual requests from Chrome or Firefox or spoofed?)
Does anything happen if they fail to download the content because of a connection error? (Maybe they retry with another IP?)
Do they also try after an unencrypted HTTP request?
You said it only did it when you tried a new domain name, do they "forget" the domains you've visited after a while? Does it do it if you visit a domain someone else has already visited? (May be hard to test as you would need multiple people)
Sorry if these questions are annoying I just find this so weird and interesting!
I hope you can still reproduce it though as this post is a bit old :x
@NekoSock I can try to verify this when I have time.
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