Matteo Ricci was one of many missionaries who invented writing systems for this language. Another system's "tone numbers" are still retained, even when using the spelling of a more modern system that represents this language's "ch" ("CH") sound as the letter "q" and "sh" ("SSH") sound as the letter "x."For 10 points, identify this language that is 
Matteo Ricci was one of many missionaries who invented writing systems for this language. Another system's "tone numbers" are still retained, even when using the spelling of a more modern system that represents this language's "ch" ("CH") sound as the letter "q" and "sh" ("SSH") sound as the letter "x."For 10 points, identify this language that is "romanized" into English letters by the Wade-Giles or Pinyin systems.
Matteo Ricci was one of many missionaries who invented writing systems for this language.
{Mandarin} Chinese [or {Mandarin}; or {Hanyu}]