This author is in China (as of 2017).
This author works for Cnnic (as of 2017).
The working group where Yu is active appear to be dnsop.
Yu has no RFCs.
Yu has the following 1 drafts:
Yu's next actions and the actions Yu waits from others can be seen from the dashboard page.
Data Freshness and Source
This is a part of a statistics report generated by authorstats
on 12/12, 2017.