Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Four-corner method

The four-corner method or four-corner system (simplified Chinese: 四角号码检字法; traditional Chinese: 四角號碼檢字法; pinyin: sì jiǎo hàomǎ jiǎnzì fǎ; lit. 'four corner code lookup-character method') is a character-input method used for encoding Chinese characters into either a computer or a manual typewriter, using four or five numerical digits per character.

Applications, Versions & Mnemonics

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around Four-corner method. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

Origin

Mnemonics

Versions

Context

Uses

Other structural encodings

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

Four-corner method

Nodes53
Edges52
Triples28
Avg. degree1.96
Density0.037736
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Four-corner method

Top relations

related to Third Revision · 16
Four-corner method → Another, Beijing, Both, China, Chinese, Commercial Press, Cultural Revolution, During, In China, It, The, Third Revision, This, Xiandai Hanyu Cidian, Xin Sijiaohaoma Cidian, Xinhua Zidian
related to Origin · 9
Four-corner method → Cai Yuanpei, China, Chinese, Commercial Press Ltd, Hu Shih, Its, The, This, Wang Yunwu
related to Uses · 2
Four-corner method → Chinese, CKC Chinese Input System
related to Versions · 1
Four-corner method → Over

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

four-corner method chinese character index characters system dictionary china pinyin cidian used four today wang code use radical corner small

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Four-corner methodrelated to OriginThe0.60section
Four-corner methodrelated to OriginWang Yunwu0.60section
Four-corner methodrelated to OriginCommercial Press Ltd0.60section
Four-corner methodrelated to OriginChina0.60section
Four-corner methodrelated to OriginIts0.60section
Four-corner methodrelated to OriginChinese0.60section
Four-corner methodrelated to OriginThis0.60section
Four-corner methodrelated to OriginCai Yuanpei0.60section
Four-corner methodrelated to OriginHu Shih0.60section
Four-corner methodrelated to Third RevisionDuring0.60section
Four-corner methodrelated to Third RevisionCultural Revolution0.60section
Four-corner methodrelated to Third RevisionChina0.60section

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.