If China managed to sneak ships past the blockading forces,
it would have to insure every vessel at Extortionate rates, possibly totaling over $10 million per ship per day.
If you have kids, then you're probably used to blowing Extortionate amounts of money on them,
while also spending big on nieces, nephews, grandkids and the children of every friend and neighbor.
And here is the situation, that the German troops have good discipline, though they do not have the high purpose of protection of the Motherland,
and have only one Extortionate purpose- to subdue another's country,
and our troops have the higher purpose of protecting the abused Motherland, and do not have such discipline and so suffer defeat.