​> As there are two different timmezones being used in Xinjiang, China,
> would it be a good idea to create another timezone named something like Asia/Urumqi2
> to correspond to the different timezone being used in the area?

This matter has come up in the past; one approach floated in the past was to use the differing Anglicizations of translations from two languages used in the area.

In the past, there was a claim that creating two zones would worsen a fraught political situation; there was no counter-claim, so no action was taken. The situation may well be different now, or the claims may be different; even if they're the same, the response may be different.

    @dashdashado