The new PLAAF Air Brigade.

Together with the ground force, the PLAAF is also moving away from her traditional Division/Regiment orbat structure to a smaller Brigade/Dadui one.   Under each Dadui is a Zhongdui/squadron.  The smallest unit is a Zhandou Fendui / Combat Detachment, which is under a Zhongdui

Air Brigade > Dadui >  Zhongdui > Fendui

Also noted that a Dadui commander in this new Brigade structure has a "battalion grade" while the deputy commander of the air brigade has a "regiment grade". 

Picture of J-10C of the 131st Air Brigade, Southern Theater Command (Number 74528)