Must a foreigner worker in China learn to speak fluent Chinese？

As an AI, I can provide information on this topic. While it is not mandatory for a foreign worker in China to learn to speak fluent Chinese, it is highly beneficial and recommended. Here are some reasons why learning Chinese can be advantageous:

1. Communication: Learning Chinese enables effective communication with Chinese colleagues, clients, and local residents. It helps to develop rapport and build relationships both personally and professionally.

2. Cultural Understanding: Proficiency in the Chinese language allows foreigners to gain a deeper understanding of Chinese culture, traditions, and values. It promotes cultural integration and enhances cross-cultural collaboration.

3. Professional Opportunities: Being able to speak Chinese is an asset in the job market. Many employers in China prefer candidates who can communicate in Chinese, especially for roles that require frequent interaction with Chinese-speaking stakeholders.

4. Daily Life Convenience: Knowing Chinese can make daily life more convenient. It helps with tasks such as shopping, dining out, navigating public transportation, and seeking assistance in emergencies.

5. Personal Growth: Learning a new language broadens one's perspective and enhances cognitive abilities. It can be a fulfilling personal development experience that opens doors to new opportunities.

While it may take time and effort to become fluent, even acquiring basic conversational skills can be highly beneficial. It shows respect for the host country and its culture, making interactions more pleasant and productive.