Are there any phonetic pangrams for Mandarin and other Chinese languages?
but chinese languages would presumably have much more


well, the cantonese has 1800+ syllables. the short answer to your question is: no.

the long answer:

cantonese has 19 initial, 56 final and 9 tone. though 19 * 56 * 9 = 9576, fortunately, there’re limited combinations of initial, final and tone. nowadays, only 1800+ syllables exist, for 8000 - 50,000 chinese characters.

an example: the initial “s” combined with the final “e”, it become “se”, this “sound” has 6 tones. that, each syllable represent several characters:

se1 | 些奓奢畬賒

se2 | 寫捨瀉灺舍

se3 | 赦卌卸厙庫涻瀉灺猞舍騇

se4 | 蛇佘畬輋闍

se5 | 社舍

se6 | 射社麝

cantonese syllable, sound: e

tone is very important in cantonese, without the proper tone, one cannot get the correct character from hearing.

a text with 1800+ characters is extremely long, for the purpose of practising pronunciation, that i don’t think such thing would exist.