Everything about Afghanistan is unsure. Better observe for at least 3 years. Afghanistan has been a mess after 40 years invasion by USSR and America. Infrastructure, agriculture, government management, united social basis, education, industry, almost all modern country system are extremely destroyed. And Taliban didn't give good memories to the local 20 rears ago. You can't expect Taliban can solve all problems in one day. America spent 2 trillion dollar in there, they can't get good results, I don't think the problems in Afghanistan is what can be solved by money or investment.
China don't enter Afghanistan for the time being, this is what I think, though Taliban invite warmly. Keep far away off Afghan politics, if Pakistan, Iran or Turkistan want, let them to repair Afghan social and political damages.
The first point, wait to know what kind of nation Taliban want to be, wait to know if America want to accept Taliban, then we decide and move as to Afghan needs.