Some things are in English and other are (I’m guessing) in Chinese.
How do I change my language settings to English.
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The Chinese characters you see say "The twelfth lunar month", "twelfth lunar month" and "Chinese new year", as per Google Translate's app and camera.
I think you've subscribed to Chinese Holidays calendar. Tap the "! Calendars" button and see if it has something to remove. It shows a error sign anyway.