Why does Thai sound a bit like Cantonese?

Thai sounds a bit like Cantonese, because both languages belong to Sino-Tibetan language family.

Sino-Tibetan language family is a group of language families classified by linguists according to genealogy, but the classification forms are various. In China, Sino-Tibetan language families are generally divided into four major language families: Chinese, Zhuang-Dong, Miao-Yao and Tibeto-Burman, accounting for about 250 languages.

Mainly distributed in China, Viet Nam, Laos, Cambodia, Myanmar, Thailand, India, Nepal, Bhutan, Bangladesh and other parts of Asia. According to the number of users, it is the second largest language family after Indo-European.

Extended data:

China is a country with the largest population and the largest number of languages using Sino-Tibetan. So far, more than 30 languages have been identified, belonging to different language families and branches. Among them, Chinese is distributed all over the country and divided into seven languages: Mandarin, Wu, Min, Cantonese, Hakka, Gan and Xiang. The Tibeto-Burman language family is distributed in the southwest, northwest and south-central regions.

Miao and Yao languages are distributed in central south, southwest and southeast regions. Zhuang and Dong languages are distributed in the south-central and southwest of China. Based on the classification of Luo Changpei and Fu Mao, combined with the investigation and research results, the Sino-Tibetan language family in China is divided into Chinese language family, Tibetan-Burmese language family, Zhuang-Dong language family and Miao-Yao language family.

Baidu encyclopedia-sino-Tibetan language department