I have DTS and closed source drivers for Xiaomi ax6. How can I transplant them to the latest Lede.Can that driver only work on qsdk.
You can't, at least not 'easily'.
No one is working on that, if you'd want to work on such a bastardized hybrid, the onus of developing that would be on you alone. Chances for success would be mediocre to low at best, at least within reasonable resource constraints and depend on your experience and abilities alone.
 well, depending on how you define 'success' and how sustainable you expect your Frankenstein to be.