A phonetic pangram is a bit of text which uses all the sounds, or phonemes, in a language (as opposed to the letters of characters). Very useful for practising pronunciation. This is one in English:
“The beige hue on the waters of the loch impressed all, including the French queen, before she heard that symphony again, just as young Arthur wanted.”
Does such a thing exist for Mandarin or other Chinese languages? In English, there are around 44 phonemes ( https://www.dyslexia-reading-well.com/44-phonemes-in-english.html ), but Chinese languages would presumably have much more.