AWP, do you have a photo in profile? Most of main features for
Dremomys pernyi are unfortunately not easily judged from the head-on angle:
1. Whitish to buff underparts (I guess it looks fine on your photo, but unforunately a bit difficult to judge from this angle and not diagnostic on its own).
2. Quite long, fairly pointed snout for a squirrel, as also indicated by its English name (virtually impossible to judge from a head-on photo).
3. Fairly large ears with a orangish spot behind them (ears look fairly small on your photo but difficult to judge from this angel. Impossible to check for spot behind ears from this angle).
4. Complete eye-ring, not clearly split (I don't see any eye-ring on your photo, but it might simply be light+angle).
5. No dark "shadow" on cheek (fine on your photo, but unforunately not diagnostic on its own).
So, we really need a profile shot. Here are some photos of
Dremomys pernyi allowing people to see the things I described above. The species is very common in parts of its range and easy to see in the wild.
Mainland type (includes several subspecies, but they are all reasonably similar):
1.
https://cdn.mercierzengphotography.com/image/huangshan/birds/squirrel-1.jpg
2.
https://cdn.mercierzengphotography.com/image/huangshan/birds/squirrel-4.jpg
3.
https://cdn.mercierzengphotography.com/image/huangshan/birds/squirrel-3.jpg
4.
http://1.bp.blogspot.com/_5JU5ZFn0jtI/TVCV85u95pI/AAAAAAAACEM/LVTKlSgUvP8/s1600/Huangshan+082+Perny%27s+long-nosed+squirrel+Dremomys+pernyi.JPG
5.
http://www.cokesmithphototravel.com/image/51400913.jpg
6.
https://b2-q.mafengwo.net/s10/M00/AC/F1/wKgBZ1k6Tw-AZp2_AA7trmb78QA51.jpeg?imageView2/2/w/680/q/90|imageMogr2/strip/quality/90
Taiwan subspecies, which is somewhat darker and more deeply colored with less distinct spot behind ear (definitely not the one on your photo, but included for completeness and because most online photos are this subspecies):
1.
http://4.bp.blogspot.com/-Wj644pHkE...uirrel+(Dremomys+pernyi+owstoni)+DSC_7993.jpg
2.
http://2.bp.blogspot.com/-qY0Yu2MOy...uirrel+(Dremomys+pernyi+owstoni)+DSC_8052.jpg
3.
http://biodiversityfocused.co.za/wp...Pallass-Squirrel-Dremomys-pernyi-owstoni-.jpg
4.
http://eoldata.taibif.tw/files/eold...ect_image/images/39/20120225050811_380606.jpg
(a fast search revealed that there also are quite a number of misidentified photos on the net, mostly Pallas's squirrel.)