If you've come across sdkgen.data.hongboluo.com, the most immediate issue is that the website's security certificate doesn't actually belong to it — it was issued for a different domain, xycdn.com. That's a serious red flag because it means your browser can't verify you're talking to the real site, and any information you enter could be intercepted.
Beyond the broken certificate, the domain has no visible owner. A WHOIS lookup returned zero results, which is unusual even for private registrations. There's also no history of the site in the Wayback Machine or any presence on Trustpilot, so there's no way to check if other people have had experiences with it.
For a site that appears to be related to data or infrastructure, the lack of email records and a functional sitemap suggests the technical setup is incomplete. Until the SSL certificate is fixed and the ownership becomes clear, there's no good reason to trust sdkgen.data.hongboluo.com with your traffic or data.