No Bopomofu is the phonetic system. What you were looking for is pinyin, which is probably preferred above Wade-Giles and other more scholary transcription systems (from Han ideograms to latin alphabet).

Kanji is part the japaneese writing system (together with katakana, hiragana and romanji). Kanji is indeed based on the Han ideograms, but it is certainly not the same.

So if you speak about chinese, use Han ideograms instead of kanji.