Conversation so far:
Was the Cardiff RFC professional?
Cardiff City Football Club is a professional association football club based in Cardiff, Wales.
How did it dawn a new era?
Their most recent season in the top flight was the 2018–19 Premier League season.

Question: What else did it accomplish?
Self-contained rewrite: What else did Cardiff FC accomplish besides performing in the top flight in the 2018-2019 Premier League season?