Language Command

The /language command allows you to customize the language settings for both the Qwen Code user interface (UI) and the language model’s output. This command supports two distinct functionalities:

1. Setting the UI language for the Qwen Code interface
2. Setting the output language for the language model (LLM)

UI Language Settings

To change the UI language of Qwen Code, use the ui subcommand:

/language ui [zh-CN|en-US]

Available UI Languages

• zh-CN: Simplified Chinese (简体中文)
• en-US: English

Examples

/language ui zh-CN    # Set UI language to Simplified Chinese
/language ui en-US    # Set UI language to English

UI Language Subcommands

You can also use direct subcommands for convenience:

• /language ui zh-CN or /language ui zh or /language ui 中文
• /language ui en-US or /language ui en or /language ui english

LLM Output Language Settings

To set the language for the language model’s responses, use the output subcommand:

/language output <language>

This command generates a language rule file that instructs the LLM to respond in the specified language. The rule file is saved to ~/.qwen/output-language.md.

Examples

/language output 中文      # Set LLM output language to Chinese
/language output English   # Set LLM output language to English
/language output 日本語    # Set LLM output language to Japanese

Viewing Current Settings

When used without arguments, the /language command displays the current language settings:

/language

This will show:

• Current UI language
• Current LLM output language (if set)
• Available subcommands

Notes

• UI language changes take effect immediately and reload all command descriptions
• LLM output language settings are persisted in a rule file that is automatically included in the model’s context
• To request additional UI language packs, please open an issue on GitHub