When foreigners made contact with the Chinese blank?

Please provide more context for your question. "Foreigners" is a very broad term, and the "Chinese blank" needs to be clarified.

For example, you could be asking:

* When did foreigners first make contact with the Chinese people?

* When did foreigners first make contact with the Chinese government?

* When did foreigners first make contact with the Chinese culture?

* When did foreigners first make contact with the Chinese economy?

Once you provide more details, I can give you a more accurate answer.