DIA not wanting to disclose sources and methods regarding information gathered (likely digital or human) in the only other country on the planet that poses a military and economic threat to the US security. Not shocking. Having seen how the sausage is made, I can attest that we overclassify the ever-living crap out of everything. Given very active Chinese efforts to infiltrate every aspect of our society, politics, and military, that's also not surprising. Frustrating as all hell, but not at all unexpected. I have no doubt that espionage effort is definitely a two way street.
What is sincerely concerning is the fact that our current leadership is not simply doing nothing at all to bring China to account for creating or at least not containing COVID, but that individuals in the administration are actively engaged in personal gain from Chinese influence, and have been for decades.