About the Zung Jung Movement
The Zung Jung Movement (ZJM) is a competitive infrastructure initiative launched by the San Diego Mahjong Club (SDMC) to advance, standardize, and expand organized mahjong competition.
ZJM is not a project only for Zung Jung players. It is a framework for mahjong players.
Mahjong is played in many traditions—Riichi, Hong Kong, Taiwanese, Filipino, and numerous house-rule systems—but competitive play is often fragmented across these variants. ZJM exists to create a shared competitive structure that allows mahjong clubs to host organized tournaments using a common standard.
ZJM formalizes a portable tournament architecture built on the Zung Jung Mahjong ruleset (v3.3) and the competitive foundation originally demonstrated by the World Series of Mahjong (WSoM). Its purpose is to transform a historically event-centered competitive model into a replicable, sanctionable system that any qualified club or organization can implement.
In this sense, ZJM represents the next stage in the evolution of Zung Jung Mahjong: moving from a single international tournament concept to distributed ecosystem of competitive events.
Historical Context
First Wave of Zung Jung
The first wave began with the creation of Zung Jung by Alan Kwan and the World Series of Mahjong, which introduced Zung Jung Mahjong as a balanced scoring system designed to support international competition between players from different mahjong traditions.
This phase demonstrated that a universal competitive format could work.
Second Wave of Zung Jung
From our perspective, the formation of the Zung Jung Movement marks the beginning of the Second Wave of Zung Jung. The second wave focuses on building the missing ecosystem.
Through the San Diego Mahjong Club and the Zung Jung Movement, the goal is to establish a standardized tournament framework that mahjong clubs around the world can adopt, allowing organized competition to grow beyond a single flagship event.
Mission
ZJM establishes:
- A single competitive rules document
- A standardized penalty and arbitration framework
- A transparent sanctioning structure
- Event formats scalable from local tournaments to championship-level events
The objective is not to create multiple competing rule systems, but to define a consistent competitive universe with multiple event configurations centered on Zung Jung Mahjong.
Digital Platform Vision
A long-term objective of the Zung Jung Movement is to create a high-quality digital platform for Zung Jung Mahjong, comparable in production value to Mahjong Soul.
Digital platforms have played a major role in the growth of modern mahjong communities. Online environments allow players to learn rules, practice strategy, and participate in organized competition regardless of geographic location. A similarly accessible platform for Zung Jung Mahjong would significantly expand the reach of the competitive ecosystem envisioned by ZJM.
At present, developing a commercial-grade digital implementation is beyond the technical and financial capacity of the individuals currently involved in the Zung Jung Movement. ZJM is therefore focused on building the competitive rules infrastructure, documentation, and club-level tournament ecosystem necessary for the game to grow organically.
If the Zung Jung competitive ecosystem expands and attracts broader community participation, partnerships, or developer interest, the creation of a dedicated digital platform may become feasible in the future. Until that point, ZJM’s primary focus remains the development of open competitive standards and grassroots tournament infrastructure.
Structure
ZJM operates on a two-tier tournament model.
Type 1 Tournaments
Sanctioned as the Community Series of Mahjong (CSoM) and Series of Mahjong League (SoM League), these are club-scale tournament formats designed for accessibility and local adoption.
It is based on the WSoM tournament structure but has been modified to be logistically easier for local clubs to run.
Type 2 Tournaments
A longer-form event configuration designed for statistical robustness and elite competition.
This format preserves the same core rules and scoring logic, remains faithful to the competitive standard established by WSoM, and makes changes to facilitate portability.
Both formats operate under identical scoring, penalty, and arbitration standards.
Portability
ZJM defines portability as a tournament framework that is:
- Replicable by independent clubs
- Not dependent on a single venue, company, or organizer
- Governed by published standards
- Structured for consistent enforcement across events
ZJM is governance architecture, not a single tournament.
Governance Principles
- One ruleset
- Transparent procedures
- Published sanctioning criteria
- Clear dispute resolution pathways
- Version-controlled documentation
ZJM is designed to outlast individual events and organizers by prioritizing institutional clarity over personality-driven leadership.
Participation
The Zung Jung Movement invites mahjong clubs, tournament organizers, and competitive players to help build a shared competitive ecosystem.
Clubs may continue playing their preferred mahjong variants for regular sessions. When hosting organized competitions, the ZJM Competition Rules provide a standardized framework capable of bringing players from different mahjong traditions together.
The long-term goal is simple:
to create a competitive environment where mahjong players everywhere can compete under a common standard.