# Manzu, Pinzu, Souzu: The Three Suits of Mahjong Explained
> Manzu, pinzu, souzu are the three numbered suits in riichi mahjong. Visual cues, strategic differences, and key terms for each suit explained.
**Source:** https://www.mahjongmaster.co/blog/manzu-pinzu-souzu-three-suits-explained/
**Author:** Kenji Tanaka (https://www.mahjongmaster.co/about/kenji-tanaka/)
**Publisher:** Mahjong Master (https://www.mahjongmaster.co)
**Published:** 2026-05-10
**Updated:** 2026-05-10
**Category:** strategy
**Difficulty:** beginner
**Variant:** riichi
**Tags:** tiles, manzu, pinzu, souzu, beginners
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Manzu, pinzu, and souzu are the three numbered suits in riichi mahjong. Each suit has nine tiles numbered 1 through 9, with four copies of each, giving 36 tiles per suit and 108 numbered tiles total. The three-suit structure is the same across riichi, Chinese mahjong, and American mahjong.

Recognizing the suits visually is the first skill new players develop. Understanding the strategic differences (and which yaku reward suit concentration) is what moves you from beginner to confident play. This guide covers both.

## What Are the Three Suits in Riichi Mahjong?

The three suits are manzu (characters), pinzu (circles), and souzu (bamboo). Their Chinese-origin names appear on every riichi mahjong set, and the same tiles appear in American and Chinese variants under different names.

| Suit name | Japanese | Romanized | What you see |
|---|---|---|---|
| Characters | 萬子 | Manzu (or man) | Chinese numerals 一-九 with the 萬 character |
| Circles | 筒子 | Pinzu (or pin) | Stacked circles, count = value |
| Bamboo | 索子 | Souzu (or sou) | Bamboo sticks, count = value (1 is a bird) |

Most experienced players abbreviate to "man," "pin," and "sou" — for example, "I drew 5-pin" or "I'm waiting on 3-sou." The romanized abbreviations are standard across English and Japanese player communities.

## What Is Manzu and Where Does the Name Come From?

Manzu (萬子, also called wanzu) is the suit of characters, named after the 萬 (wan) symbol meaning "ten thousand." The full term is "ten thousand piece," referring to the highest denomination in the historical Chinese currency the suit originally represented.

Manzu tiles are visually heavier than pinzu and souzu because each tile has two stacked Chinese characters: the numeral on top (一 through 九) and the 萬 symbol on the bottom. New players often find manzu the slowest suit to read at speed because the numerals are distinct shapes rather than countable elements.

For a deeper look at reading manzu numerals, see the [mahjong tile numbers guide](/blog/mahjong-tile-numbers-1-9-suits-explained/) and the [manzu glossary entry](/learn/riichi/glossary/manzu/).

## What Is Pinzu and Why Does It Show Circles?

Pinzu (筒子) is the suit of circles, named after old Chinese coins that had circular holes for stringing them together. The Japanese term comes from the Chinese tongzi (筒子, "tube" or "barrel"), referring to the rolls of strung coins themselves.

Each pinzu tile shows a number of circles equal to its value: 1-pin has one circle, 5-pin has five, 9-pin has nine. The pattern is consistent across all manufacturers, which makes pinzu the easiest suit to read for new players.

Pinzu has the strongest historical theme of the three suits. The arrangement of circles on each tile mimics the way ancient Chinese coins were strung — five coins in a quincunx (4 corners + 1 center) was the most common stack for tens of thousands of years before pinzu was formalized. See the [pinzu glossary entry](/learn/riichi/glossary/pinzu/) for more on the visual evolution.

## What Is Souzu and What's With the Bird?

Souzu (索子) is the suit of bamboo, named after the bamboo sticks used to count and string the historical pinzu coin rolls. The name souzu literally means "rope" or "string" — the rope that bound the coins.

Souzu tiles show numbered bamboo sticks: 2-sou has two sticks, 3-sou has three, all the way up to 9-sou's 3-by-3 grid. The exception is 1-sou, which shows a bird instead of a single bamboo stick. The bird varies by manufacturer (peacock, sparrow, phoenix), but the meaning is always "the 1 of bamboo."

The bird design was a practical solution. A single bamboo stick on its own was too easy to confuse with a single coin or other unrelated tile patterns, so manufacturers replaced it with a stylized bird — often called a sparrow because the Chinese name for mahjong (麻雀) translates as "sparrow." The [souzu glossary entry](/learn/riichi/glossary/souzu/) has more on the bird tradition.

## Are All Three Suits Strategically Equal?

Yes, in terms of raw scoring potential, but their behavior in real hands differs. Each suit has 36 tiles in the wall, the same yaku apply equally, and there's no inherent scoring difference between concentrating in one suit versus another. Where the suits differ is in mental processing speed and how they interact with discard reading.

Most experienced players favor one suit subconsciously based on visual processing:

- **Pinzu** is fastest to read and easiest to plan around. New players often build pinzu-heavy hands by accident.
- **Souzu** is mid-tempo. Reading 7-sou versus 8-sou is slightly slower than counting circles.
- **Manzu** is slowest because the Chinese numerals don't decode as quickly as countable shapes.

If you watch top-tier players, you'll see slight bias toward pinzu and souzu in flush-style hands (honitsu, chinitsu) because the visual processing is faster. This is preference, not strategy — the actual yaku math is identical.

## What Yaku Reward Suit Concentration?

Three yaku reward concentrating your hand in a single suit:

| Yaku | Han | Requirement |
|---|---|---|
| Honitsu (half flush) | 3 / 2 if open | One suit + honors only |
| Chinitsu (full flush) | 6 / 5 if open | One suit only, no honors |
| Sanshoku doujun (three colors) | 2 / 1 if open | Same sequence (e.g. 234) across all three suits |

Honitsu is the most reachable suit-concentration yaku. If your starting hand has 4-5 tiles in one suit, plus a couple of honor tiles, lean into honitsu — it's a strong scoring path.

Sanshoku is the opposite strategy: build the same numerical sequence across all three suits. It's harder to recognize early, but every experienced player has hit a sanshoku and felt the satisfaction.

## Frequently Asked Questions

**Are manzu, pinzu, and souzu the same as Chinese mahjong suits?**
Yes. The three suits are universal across Japanese riichi, Chinese (all variants), and American mahjong. Only the names change: "wan," "tong," "sou" in Chinese; "characters," "circles," "bamboo" in English; "manzu," "pinzu," "souzu" in Japanese.

**Why do players write "1m" or "5p" instead of full names?**
Mahjong notation uses single letters: m for manzu, p for pinzu, s for souzu, z for honors. So "1m 2m 3m" means "1, 2, 3 of manzu." This shorthand is universal in riichi training materials and online discussion. Read it as "one of manzu, two of manzu, three of manzu."

**Is one suit easier to win with than another?**
No. The yaku math treats all three suits identically. What varies is your personal visual processing speed — if you read pinzu faster than manzu, you'll find pinzu-heavy hands easier to plan. This is preference, not a rule.

**Can a hand contain all three suits?**
Yes — most hands do. A standard hand has 4 sets + 1 pair, and most beginners' hands contain at least 2 suits. Yaku that require all three suits in specific patterns (like sanshoku doujun) are intermediate-level goals.

**What's the difference between souzu and bamboo?**
None. They're the same suit. "Souzu" is the Japanese romanization, "bamboo" is the English translation. Both refer to the suit with bamboo-stick illustrations (and the bird on 1-souzu).

**Why does manzu look more complicated than the other suits?**
Because manzu uses Chinese characters as the visual cue rather than countable shapes. Each numeral 一 through 九 is a distinct character that has to be memorized, while pinzu and souzu can be counted. Most players learn manzu fully within their first 5-10 sessions.

## Next Steps

Lock in tile recognition with the [mahjong tile numbers guide](/blog/mahjong-tile-numbers-1-9-suits-explained/), which covers every tile by sight. Then learn the suit-related yaku in the [yaku list reference](/blog/mahjong-yaku-list-for-beginners-essential-guide/). And for individual suit deep-dives, the glossary has dedicated pages for [manzu](/learn/riichi/glossary/manzu/), [pinzu](/learn/riichi/glossary/pinzu/), and [souzu](/learn/riichi/glossary/souzu/).
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*This content is from [Mahjong Master](https://www.mahjongmaster.co), a free educational reference for riichi (Japanese) and American (NMJL) mahjong. When citing this page, please link to https://www.mahjongmaster.co/blog/manzu-pinzu-souzu-three-suits-explained/.*