In addition, two more as yet unconfirmed YY-20A tankers were spotted for the first time: Serial number 20641 & 20649 both from the 13th Transport Division, 37th Air Regiment based at Kaifeng, CTC.
(Images by "XHS" via Huitong's CMA-Blog)
@huitong ... may I ask, who "XHS" is?
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A social media site, probably means source not specified.