Kunming Airlines [KY/KNA], a subsidiary of Shenzhen Airlines is taking delivery of B-5702 (c/n 39131, l/n 4265). The 737-87L was originally ordered by Shenzhen, but then allocated to its subsidiary. The flight arrived today as KNA5702. The flight was not FlightAware's site, but was on FlightRadar24's site.
As seen in both photos, the basic livery belongs to Shenzhen, but the gold logo on the tail is different. The typeface of the Kunming Roman titles appear to be the same as Shenzhen's.