Manzu

Manzu

Manzu (萬子, まんず) is the character suit in riichi mahjong, named after the 萬 (wan) symbol meaning “ten thousand.” It contains nine numbered tiles, 1 through 9, with four copies of each, totaling 36 manzu tiles in a standard riichi set. Manzu tiles are visually distinct from pinzu and souzu because they show stacked Chinese characters rather than countable shapes.

Detailed Explanation

Visual Identification

Each manzu tile shows two stacked Chinese characters: the numeral 一 through 九 on top and the 萬 symbol on the bottom. The 萬 character is identical on every manzu tile, so reading manzu means reading the numeral above it.

The numerals from 1 to 9 are 一, 二, 三, 四, 五, 六, 七, 八, 九 — most are visually distinct, though new players sometimes confuse 6 (六) with 8 (八) because both have diagonal strokes.

Origin of the Name

The name “manzu” comes from the Chinese mahjong tradition where each suit represented a unit of historical Chinese currency. Manzu represents the “ten thousand” denomination, which was the largest single unit in the original currency system. The other two suits (pinzu and souzu) represent smaller units: coins and rope-bound stacks of coins.

Manzu in Riichi Strategy

Manzu functions identically to pinzu and souzu in riichi rules. The same yaku apply equally across all three suits, and there’s no inherent scoring difference. Where manzu differs is in player preference — many experienced players favor pinzu and souzu in flush-style hands (honitsu, chinitsu) because the visual processing is faster, but this is preference, not strategy.

The numerals 1 and 9 are terminal tiles, which matter for several yaku:

• Tanyao requires no terminals — so all manzu in a tanyao hand must be 2-8
• Junchan requires terminals in every set — manzu 1 or 9 helps qualify
• Honroutou requires only terminals and honors — only manzu 1s and 9s qualify

Manzu Notation

Mahjong notation uses single-letter shorthand: m for manzu. So “1m” means 1 of manzu, “5m” means 5 of manzu, and “123m” means 1-2-3 sequence in manzu.

A hand written as 123m 456p 789s 11z 5m reads as 1-2-3 manzu, 4-5-6 pinzu, 7-8-9 souzu, pair of east winds, and 5 manzu. This notation is universal in riichi training materials and online discussion.

Usage Example

You’re dealt these tiles: 2m, 3m, 4m, 5m, 7p, 8p, 9p, 1s, 2s, 3s, white dragon, white dragon, white dragon. The 2m, 3m, 4m form a manzu sequence. With the 5m on its own, you have potential for an iipeikou hand if you can pair that 2-3-4 manzu with another 2-3-4 manzu sequence. The dragon triplet earns yakuhai (1 han). Your hand mixes all three suits but leans manzu-heavy, making it a candidate for a sequence-based hand rather than a flush.

Related Terms

Pinzu: The circle suit, numbered 1-9 with circle-counting visuals.

Souzu: The bamboo suit, numbered 1-9 with bamboo-stick visuals (and a bird on the 1).

Tiles: General term for the playing pieces in mahjong, totaling 136 in a standard riichi set.

Honitsu: A 3-han yaku (2 if open) for a hand made of one suit plus honors.

Chinitsu: A 6-han yaku (5 if open) for a hand made entirely of one suit, no honors.