The answer depends on the context. Can you explain a bit more about how you are using the term? In which situation? Sometimes one might say "Made in USA... or Made in China" when referring to a product created in a country. However if you were reading a newspaper article the word "made" would not be used. In that case (or the case of writing a paper) one might simple write "by YiChen Du" or even "YiChen Du" by itself. If you can give more context then I can present an appropriate response.