Actually, Bei = Pe, in another form of romanization. "B" in Hanyu Pinyin is an unaspirated "p". In addition, "j" was indeed a "k"-like sound in the past. Mandar

Actually, Bei = Pe, in another form of romanization. "B" in Hanyu Pinyin is an unaspirated "p". In addition, "j" was indeed a "k"-like sound in the past. Mandarin Chinese underwent a linguistic process called palatalization, which softens "k"-like sounds; the same process has Italian pronounce "k" sounds as "tch", and, to a further extreme, has English and French pronounce them as "s".