Well it's always worth a try, but I dunno... Larches grow around here, but it's about as hot as they can take it. Japanese Larch might be your best bet, but others may know more.

I doubt that any larch will take the summer heat you get. Pseudolarix of course will do very well.

Cathaya photos from google image search:
{{gwi:652388}}
Young plant
{{gwi:652390}}

Taiwania should do OK from cuttings, but whether a cutting from a dying specimen will have the energy, and freedom from infection, to grow roots, I don't know.

Resin

I was afraid that they would not be able to tolerate the heat very well but the reason I thought it would be worth a try is because The Flora of China website says that Larix speciosa grows above 2500m in southeastern China and Larix mastersiana above 2300m but I was not familiar enough with the climate there to make a good judgement about it. I know that they would all be condsidered alpine conifers at that elevation but I don't know if it ever gets hot in those mountains.

At a rough guess, I'd say the summer temperatures at those altitudes in Yunnan are going to be about equivalent to 1500-2000m altitude in Georgia.

Try planting them on top of Brasstown Bald, they'd probably grow well there!

Resin

Japanese Larch are doing well here in Northern Alabama, knock on wood (so to speak). The one pictured is now about 5 years older than it was when the photograph was taken. We've also planted three in our own back yard.

Here is a link that might be useful:

There is a small image of the one at Oatlands here. The central plain of Virginia can be VERY hot.

I think the Dunkeld Larch (L. x marschlinsii) will be more adaptable here because the Japanese one is probably a bit more heat and humidity tolerant.

As others have posted in another thread, I'd also like to try the larch shown in the dendropress.com sample, Larix mastersiana.

Here is a link that might be useful: http://www.oatlands.org/Garden/index.asp