Note that a bonus subtracts points from your score, not adds them. The first person to get rid of all of the cards in the hand during a round has a score of zero.
Players that remain in the game score 1 point per card left in hand. Shanghai is a rummy type game with specific entry melds for two to four players. Shanghai Rummy Score Sheet Printable from Game play can continue as long as the players choose to play.
0.1 If You Go Out Blind (Discard All Your Cards In One Play), You Earn A Bonus Of 25 Points (50 If You Haven't Used A Joker).
