I'm not sure that this rail system will be all it's chalked up to be, barring China managing to shut down ocean based freight. The ocean based stuff is slower, but a lot cheaper. Secondly, it doesn't rely on many unstable regions and political bullshit threatening to shut down the system at any moment.
There's a reason the US established worldwide trade through the ocean rather than through europe.
Maybe this will all go well, but I am skeptical. Remember that "sounds good on paper" and "sounds good to the common man" are not "is good for the economy"