Kolkata Metro Line 6 opened yesterday
https://en.m.wikipedia.org/wiki/Kolkata_Metro_Line_6#:~:text=Kolkata%20Metro%20Line%206%20or,Kavi%20Subhash%20and%20Hemanta%20Mukhopadhyay.
It's just the partial opening of Kolkata Metro Line 6.
Finally, it will be extended to Bimanbandar(Airport), and passengers will be able to trasfer to Kolkata Metro Line 4. I'm looking forward to seeing more extension.