Nice pictures. One or two corrections:
No. 6 is a female Rufous-tailed Shrike, this bird and the male in photo 2 are of the nominate subspecies isabellinus which is a migrant through Xinjiang, breeding in NE China and Mongolia. Arenarius which is an endemic breeding taxon in S Xinjiang (and perhaps also the Qaidam) is much sandier, has sandy brown primaries, an incomplete mask and lacks a white primary patch.
No. 8 is a Ravern (note the strongly graduated tail and heavy bill).
