The number six in Chinese characters.
Liu sounds like smooth/flowing — a lucky number meaning everything will go smoothly.
Character Suit
Match with an identical tile. Both tiles must be free (no tile on top, at least one open side).
4 identical tiles per standard set
Character 6 has a more complex shape. Study it to avoid confusion with other Character tiles.
Explore all tiles in the Mahjong Tile Guide to learn matching strategies for every suit.