If you don't know what is Pinyin I googled it for you (I didn't know what it is):
Pinyin is a system for writing Mandarin Chinese sounds using the Latin alphabet. Pinyin is commonly used for learning Chinese pronunciation and for typing Chinese characters.
Something to keep in mind is that teaching Pinyin in schools is at least partially an attempt by the Chinese government to drive non-Mandarin dialects of Chinese extinct.
That's because Chinese characters are sred by all of the dialects of Chinese while Pinyin is based on the Mandarin pronunciation.
> It might seem weird for us to teach beginners Python, knowing that they’ll then have agents output other, faster languages. I see an analogy here with Chinese: Many people don’t realize this, but children in China first learn Latin characters, which they use to spell out Chinese phonetically, using a system called “pinyin.” They then use their knowledge of Latin characters to learn Chinese characters, whose pronunciation isn’t obvious from the characters themselves.
The article did explain, albeit near the end.