People join the Afghan army because of poverty. They just want the pay check. The moment US army left, morale broke and they routed. Money can't buy everything.
There is a serious implication for this if the vaccine just last for 6 month. If the vaccine don't last, the epidemic will last longer, and the virus has more bigger chance to mutate. Also, we need to be vaccinate regularly.
You don't need 3000 army to evacuate embassy. This is non-sense. Most likely this is to extract covert agent/asset trapped in various region. Taliban won't be so kind since many Afgans were tortured in various black sites for info.
These sending troops over are not about extracting embassy staff, non-sense. You don't need army to evacuate embassy staff. These are extraction army for covert agents and assets when they got trap. If they are captured, they might expose many names. Since US tortured many Afgans, Taliban will...
Just build dual use canal/highway. Dry season = road. Wet season or emergency = canal. There, locals won't complain water shortages plus solve some of the flooding problems.
My guess is nothing substantial. Only small agreements probably. China help US in 2008, but in the end US stab China in the back. Any agreement will be short and small, because the next president is not going to honor agreements, like what happen to Iran.
Some of the unique business model cannot be translated well here. For example, certain services or food&beverages. Some exist in China because of certain government mandates that don't exist elsewhere. Otherwise it has been copied.
Obviously, I'm asking on a personal level.