Near the top of the Long March 2F rocket (middle of the fairing?) that launched today with the Shenzhou-11 crew, there are four square wafffle-like structures that remind me of grid fins.
What are they?
above x2: from http://www.cctv-america.com/2016/10/14/heavenly-vessel-chinas-shenzhou-11-ready-for-liftoff
above x2: screen captures from the YouTube video Launch of Manned China Mission with Shenzhou 11 to Tiangong-2.