China will not give them those. Infact no country supports or gives advanced weapon systems to Taliban.
China knows Taliban will double cross just like how Pakistan has done with the Americans.
Well we really can't predict.
Maybe the greed for the supposed trillion dollars of mineral wealth that Afghanistan possesses. Or to ensure that the Xinjiang Ughurs don't get weapons and training from elements in the Taliban.
I personally would not mind a Taliban government being established if
- it sheds its anti India attitude and guarantees that no anti India activity will
be permitted on its territory.
- it starts actively aiding the Ughurs of Xinjiang to resist Chinese occupation.
If they agree to help stir up Xinjiang and do not pose a security threat to India then perhaps we can co-exist with the devil.
The Chinese know that any action like giving systems to protect Afghanistan's airspace will invite an US reaction. I doubt whether even Russia will stay quiet as an Fundamentalist Islamic Government consolidating in Afghanistan poses an long term threat to the Central Asian Muslim countries whose security is guaranteed by Russia.
Yes, maybe China will choose caution. Only the future will tell.