Chao-chow, also known as Teochew, is a Southern Min Chinese dialect spoken by the Teochew people, primarily in the Chaoshan region of eastern Guangdong province in China, as well as in various overseas Chinese communities. Here are some key points about the Chao-chow language:

1. Classification: Chao-chow is a member of the Southern Min branch of the Min Chinese dialect group, which is part of the larger Sino-Tibetan language family.

2. Script: Chao-chow is traditionally a spoken language, and it does not have its own standardized script. However, it can be written using Chinese characters, which are shared across various Chinese dialects.

3. Geographic Distribution: Chao-chow is primarily spoken in the Chaoshan region, which includes the cities of Chaozhou, Shantou, and Jieyang in eastern Guangdong province, China.

4. Dialects: Within the Chao-chow language, there are several regional dialects, which can vary in pronunciation, vocabulary, and grammar. The major dialects include Teochew Proper, Swatow, and Hailufeng.

5. Cultural Significance: Chao-chow is an integral part of the cultural identity of the Teochew people. It is used in various aspects of daily life, including communication, storytelling, ceremonies, and cultural practices.

6. Overseas Communities: Due to historical emigration from the Chaoshan region, Chao-chow is also spoken in various overseas Chinese communities, particularly in Southeast Asia, where Teochew communities are prevalent.

7. Bilingualism: Many Chao-chow speakers are also proficient in other Chinese dialects, particularly Mandarin, which is the official language of China. Bilingualism is common, especially in formal and educational settings.

8. Preservation Efforts: Efforts have been made to preserve and promote the Chao-chow language, particularly in education and cultural preservation initiatives. This includes the development of educational materials and resources.