Looks like submitter only ever spams these low effort sites: All hosted by same IPs - same design, hidden registrar info. awesomeflutter.com having been resubmitted by another a/c recently.

https://news.ycombinator.com/submitted?id=heshanfu

golangexample.com

androidexample365.com

flutterawesome.com

franktheme.com

reactnativeexample.com

flutterawesome.com

iosexample.com

pythonawesome.com

androidexample365.com

reactjsexample.com

vuejsexamples.com