to be honest, there are many chinese dialects, Cantonese is one of the chinese dialects, i can speak , Fuzhou dialects, which is Min Dong dialect, Min nan or known as "Hokkien" in south east asia. or known as "Hoklo" or "taiwan-oe" in taiwan. Other than that Hakka , Teochew , Shanghainese and more. Cantonese are just one of the dialects so are Mandarin. Due to various language in China , they choose Mandarin as their official language instead, but some can speak their native languages. Some of the Japanese word are similar to chinese, For example , (天才) Genius= Japanese - Tensai/. Mandarin - Tien Chai. Phone - Hokkien or known as Taiwanese "DienWa" Mandarin " Tien Hua" Japanese " DenWa". World - Hokkien or Taiwanese " Sekai " Mandarin " SeJie" Japanese " Sekai " There are more sound similar to Japanese.