The month is not complete, but you can see, that in the Statistics, that China was really Number 1:
The Network AS4837 (CHINA169-BACKBONE CNCGROUP China169 Backbone) and the Network AS4134 (CHINANET-BACKBONE No.31,Jin-rong Street) was so heavy and all Abuse-Contacts does not Work (no MX-Records, no A-Records….), so we send the Reports to security.at.apnic.net. But there was a fight against Windmills.
When you know, that your Website/Server has no Users from China, you can block the complete IP-Range/AS-Network.