| add_phrase | Add a Custom Polyphone Phrase |
| list_phrases | List Custom Polyphone Phrases |
| to_pinyin | Convert Chinese Characters to Hanyu Pinyin |
| to_pinyin_initials | Extract Pinyin Initials |
| to_pinyin_toneless | Convert to Toneless Pinyin |
| to_slug | Create URL-Friendly Slug from Chinese Text |
| to_varname | Generate Valid R Variable Names from Chinese Text |
| unihan_pinyin | Unihan Pinyin Dictionary |