Which cities in Henan Province have the best Go Grade Examination?

Zhengzhou and Luoyang are the main cities with relatively active Go grading in Henan Province. These two places have relatively perfect Go training systems and rich competition resources, which are conducive to the technical upgrading and level assessment of Go lovers. Of course, there will be a small number of Go grading activities in other regions, but relatively few. If you want to take the Go exam in Henan Province, you can give priority to Zhengzhou and Luoyang.