[ThrowawayR2]

Reading material is not eligible for Show HN submissions according to the separate guidelines for them at https://news.ycombinator.com/showhn.html . Probably doubly so since it's not even something created by the submitter.

[bear330]

I have changed to title, seems not reflected yet? Thanks for reminding me

[bear330]

Sorry I will see the guide later, and do something