The objective of Mah Jong is to assemble 14 tiles in a defined way. Typically towards that aim, the players select and discard tiles, one by one, keeping a number of 13 tiles. On the brink of achieving 14 tiles, the player declares they are ‘fishing’. The 14 tiles, once in the targeted organisation, are a Mah Jong.
A Mah Jong, in one way of organising, contains tiles in 3s(pungs) or 4s(kongs) and a pair. A hand of tiles typically contains 4 pungs or 3 kongs and a pair.