So, the thing with Mandarin Chinese is it’s not a normal language on the romanization side. Instead of the characters working like Japanese kanji, every character is tied to a specific pinyin and a specific tone for that pinyin. CV-C Mandarin is more of a gimmick than a functional concept, so if you’re interested in creating a Chinese VB I would recommend Risku’s list or CV Chinese (which is actually just recording all the pinyin).