Recent DNS attacks from China?

Hi All, I am wondering if anyone else is seeing a sudden increase in DNS attacks emanating from chinese IP addresses? Over the past 24 hours we've seen a sudden rash of chinese IPs attacking our DNS servers in the order of 5 to 10 million PPS for periods of 5 to 10 mins, repeated every 20 to 30 minutes. This anomalous traffic started roughly 24 hours ago, and while we've had occasions of anomalous chinese traffic, never anything of this type. Anyone else? Regards, Leland