Why wouldn’t they have problems stopping Chinese hackers? Chinese aren’t stupid and they’ve got programmers working in intelligence.
This is not solely a matter of the Chinese intel having good hackers, etc. The real root of the issue here involving China and Chinese-oriented hacking and cyberattacks is that this Jack Squat administration has downgraded China from being the foremost primary intelligence collection AND counterintelligence concern or priority to being merely a second level concern or prioirty.
The above is about as idiotic as this same Jack Squat administration utilizing US intelligence assets—the same assets that could be utilized to further bolster our counterterrorism (international and domestic) efforts—to watch ice melt and trees grow and ‘fight’ global warming.