pinyinToZhuyin Converts pinyin text to zhuyin pinyinToZhuyin('Nǐ hǎo mā'); Returns "ㄋㄧ3 ㄏㄠ3 ㄇㄚ1" pinyinToZhuyin('ni3hao3ma'); Returns "ㄋㄧ3ㄏㄠ3ㄇㄚ5"