Can you mix languages between your main deck, legend, runes, and battlefields in tournament play?

Ruling: Each of the four deck categories (main deck, legend, rune deck, and battlefields) must be in the same language within itself, but each category can be in a different language from the others.

Sequence:

• Main deck: all cards must be same language
• Legend: must be one language
• Rune deck: all runes must be same language
• Battlefields (3 cards): all must be same language
• These four categories can each be different languages from each other

Nuances:

• You can have English main deck with all Chinese runes
• You can have Chinese battlefields and legend with English runes