Does Hokkien and Cantonese sound different? Is the difference big? Does Hong Kong, Macao and Taiwan speak Cantonese or Hokkien?

The two languages ??sound quite different. At least they cannot communicate with each other without a period of learning. However, compared with their respective differences in Mandarin, they appear to be much similar...

The mainstream language in Hong Kong and Macao is Cantonese, but there are also many Hokkien immigrants in Hong Kong and Macao, so Hokkien is relatively popular in some places...

The main dialect of Taiwan is Hokkien. A branch of the language, the Minnan speaking population is mainly concentrated in Xiamen, Zhangzhou and Quanzhou in southern Fujian. Many overseas Chinese in Southeast Asia also come from southern Fujian, as well as Chaozhou and other places in Guangdong, parts of Hainan and very few places in Jiangxi and Wenzhou... In southern Fujian Among the various sub-dialects of the Chinese language, Taiwanese and Xiamen dialect are the closest...