Shovels have always been the better out of the two investments.
There were rumours about China grabbing hold of one of ASML's machines, but with no additional information on this it's safe to assume they're still hammering out 7nm chips using DUV at piss poor yields.
Except in China’s case where they eventually figured out how to make shovels themselves in plenty of other industries (and likely at some point in the future chip fabrication as well)
I see no reason to think that CXMT’s yields are poor. Or, for that matter, that Huawei’s yields are a problem.