Here's why:
* Language Families: Chinese belongs to the Sino-Tibetan language family, while Indo-European languages form a completely separate family.
* Origins and Structure: Indo-European languages originated in the area around the Black Sea and spread throughout Europe, Asia, and the Americas. Chinese, on the other hand, originated in China and is a tonal language with a different grammatical structure.
* Vocabulary: While there are some loanwords in Chinese from other languages, including some from Indo-European languages, the core vocabulary of Chinese is distinct and unrelated to Indo-European languages.
Examples of Indo-European languages: English, Spanish, French, German, Hindi, Russian, Greek.
Examples of Sino-Tibetan languages: Mandarin Chinese, Cantonese, Tibetan, Burmese.