hi @yu.yang

This forum is dedicated to software developers using Refinitiv APIs. The moderators on this forum do not have deep expertise in every bit of content available through Refinitiv products, which is required to answer content questions such as this one.
The best resource for the content questions is the Eikon support team, which can be reached by submitting queries through MyRefinitv. The support team will either have the required content expertise ready available or can reach out to relevant content experts to get the answer for you.

Then if they provide you with the @TR function of Eikon Excel, which could be converted to Python code for Eikon Data API, we're happy to help you in the conversion.