Ya know, at yesterday's confirmation hearing with John Ratcliffe, I think Ratcliffe intentionally mentioned China, to Feinstein.
He likely wanted to let her know that he knew.
Her response: "I appreciate that."
I'm sure she did.
At the 50 minute mark:
https://www.c-span.org/video/?471685-1/director-national-intelligence-nominee-john-ratcliffe-testifies-confirmation-hearing
"Whistleblower in China is why we got an early warning"