Why Using Pinyin for Variable Names Hurts Code Readability

Many Chinese programmers wonder why the community discourages using pinyin for variable names, such as mingzi for "name" or shuzi for "number". Veteran developers find this practice awkward and unprofessional.

The main reasons stem from team norms: most colleagues avoid pinyin, so newcomers quickly adopt the prevailing style.

Using pinyin can cause several problems:

Reduced readability: Non‑Chinese speakers (often called "foreigners") struggle to understand pinyin identifiers.

Collaboration difficulty: Teams find it harder to cooperate and maintain code written with pinyin.

Lack of cross‑language and cross‑culture compatibility: International projects cannot easily use pinyin‑named code.

Ambiguity and confusion: Different words may share the same pinyin spelling, increasing the risk of bugs.

Decreased maintainability: As codebases grow, remembering the meaning of pinyin identifiers becomes harder, raising maintenance costs.

To improve readability, maintainability, and scalability, it is recommended to avoid pinyin naming and follow common naming conventions:

Use meaningful English names that clearly describe the purpose of variables or functions.

Apply camelCase (e.g., userName) for most languages like Java.

Use snake_case (e.g., user_name) in languages such as Python.

Avoid obscure abbreviations unless they are widely recognized.

Maintain a consistent naming style throughout the codebase.

Respect case sensitivity in languages that differentiate upper and lower case.

Do not use reserved keywords as identifiers.

Balance name length and clarity—names should be descriptive but not overly verbose.

Promptly rename ambiguous or inappropriate identifiers to improve code quality.