Final answer:
Western China is considered the most conservative part of China in terms of behavior and language due to the presence of ethnic minority groups with distinct cultures, languages, and customs.
Step-by-step explanation:
The most conservative part of China, both in terms of behavior and language, is typically considered to be Western China.
Western China, which includes regions like Xinjiang, Tibet, and Qinghai, has a large population of ethnic minority groups who have their own distinct cultures, languages, and customs. These regions are known for practicing more traditional customs and holding onto conservative values. For example, Xinjiang is predominantly Muslim, and the people in this region tend to follow stricter religious practices and have a more conservative approach to behavior and language.
Overall, it's important to note that this is a generalization, and not all individuals or communities within Western China may adhere to conservative values.