Some questions
Why have litle hole on IRST surface?? it is first time i see like this.
It seems Irst stay on hide position, but why this litle hole??
And other, litle holes for refrigeration on vertical tails seems diferent. Or maybe it is a problem of the perspective view?
And finally, glass of the cockpit seems diferent too. It has a docel which divide the glass…
All this is diferent to the first series i think…
053 is a modified prototype. IIRC, it is supposed be able to act as a UCAV command ship (for the Sukhoi S-70 “Okhotnik”?). There is one ‘device’ one on top (where the IRST used to be) and in front of the FLG – Link
All 053 photos from RussianPlanes.net – Link
In the early 2000s, I remember rumors of China procuring the ‘Kolchuga’ system from Ukraine. I wonder whether the system in pic below (on the right) is related to that?

Just a nice pic of 053 – https://russianplanes.net/id246015

Some interesting initial developments –
* YJ-12 base Anti-Radiation missile
* Ship launched Anti-Ship Ballistic Missile – Link
* and interestingly a ‘near-space’ long range cruise missile.
1st the massive rail-gun test at sea and now operational lasers? 


Modified H-6G (H-6L?) with 2x YJ-12 missiles.
These are expected to be replaced by the H-6J (Naval H-6K) in the near future which can carry 6x YJ-12 (maybe 1 more in the internal bay) – Link

H-6K with KD-20 – https://twitter.com/TheBaseLeg/status/1113035357019267073

:stupid:

What is this? http://www.hisutton.com/China_Sailless_Submarine.html
Very large UUV?
Indeed … the only problem right now is: With these numbers of all J-10B and Cs known and even assuming the J-20 is using the same engine, there are way more fighters operational than engines purchased; at least confirmed.
They probably bought a much larger number from Salut. Also, whats with chit-chat that China is modifying the AL-31F (FN?) in-house especially the engines used in the J-20? 
What are the curent estimates for the 4.5 and 5th gen fighter in the PLAAF? From what I recall,
J-10B – 56?
J-10C – 100+?
J-16 – 3 to 4 batches?
J-20 – 24+?
In addition (excluding attrition),
4th gen – J-10A/AS – 250+?, J-11B – ??, Su-30MKK -76, J-11A – 95, Su-27SK/UBK – 78
3rd gen – J-8F/DF/HF – ??
Older – J-7EG/L – 260+?, J-7G/G2 – 80
AL-31FN engine i guess, from the nozzle.
Yes. AL-31FN Series 3 for all J-10C from the start.