Saudi and China are not members of MTCR. MTCR is not a binding treaty and has no teeth anyways. https://en.wikipedia.org/wiki/Missile_Technology_Control_Regime
EUV machine is made up of many components. China has been plugging away at all of them. I heard optics and laser source is the last two areas that China still cannot produce domestically.
Normally they look for someone to trade with. I've done it before for a family friend looking to move money to buy property in the US. I transferred from my bank account to pay for deposit, and they transferred money to my bank account in China.
your data doesn't break down the type of jobs that are hiring. I provided proof that high paying tech sector have high unemployment at the moment. And no, these people aren't going to go flip burgers.