How do we get GV in the game? Do we need points for it or what?

every time you dance, you get GC
then you press the Auction button in the side, there you can sell your GC for GV ;)
about 3 GV for 10 GC or so

There are 4 ways to get GV (Gold Vouchers) ingame.

• Direct exchange of points for GV.  It can be done via the "Gold Voucher Conversion" button at the lower right of the Auction House menu  or from the Gem Master.
  
  
• Selling of coins, gems or eternity emblem in the Auction House.  Items are traded for GV.
  
  
• Receiving Red Packets from players.  Each Red Packet gives from 50-200 GV randomly. Red Packets can be bought in the ingame store or online web store using Points.
  
  
• Point Deduction Card which can be obtained from Gold Treasure Box (point bought from web store)
  

Ok, Thank you so much! ^^