Matomo cannot recognize Country info in Chinese?

Hello:
I’m a beginner in Matomo.
I’m now using HTTP Server Module to get visitors’ location.

My problem is:
Even though I could see the right location info(both city and country) from the setting panel like this:

image

The Country info in the Visits Log is unknown, however, the City info works well.

Anyone could help? Thank you very much.

Linked

The location info in the Visits Log is like this:

image