And their outdated and old HAN class nuclear subs can trail down US aircraft carriers in SCS for 2 days and US carrier battle group didn't pick them in early to mid 2000 and Chinese ain't sitting idle they improve a lots in their sub tech
That's why everytime They try to Enter in Japanese water, Japanese Subs force them to return.
They tried to get the tech of Reducing sub acoustic signature from Russian Scientists & Russia punished those scientists with Treason & Gave them Life sentence of 70-80 Year.
Everyone knows except Pakistanis that Chinese subs are famous for their Noise & acoustic signatures.
And chenes are still not able to develop any credible defence systems for their ships which can protect them from Railguns, Harpoon & Brahmos Naval.
that's why they use 5 to 4 layers of defenses unlike the whole world which uses maximum 3 layer of defenses.
And they bought only initial for J-10/J-11 series, especially J-11 series have been equipped with more powerful WS-10 series of engine so where are your KAVERI ENGINE for you mighty videc Tej@$$, and as for transport/cargo they are relying more on their new Y-20 than IL-76
and tell us how many Su-35 they have if you don't know i can tell you only 24 Su-35 they have
and they have no defense against your Brahmouse/scalp they have S-400/HQ-9/HQ-16 and what about Chinese supersonic/subsonic cruise missiles raining down Indian position in Laddakh
WS -13 & 15 are famous for eating themselves like intial Mig-25 & Mig-21 engines.
Fir trainers China use Ivenchenko Progress or 50 yrs old Garret engines, Which HAL builds for Americans.
For J-10s they use Al-31F & most of their Crashes happen bcoz of Engine burns.
Just Imagine U have an Engine of 110KN thrust & instead of mass producing it U r begging to Russia for AL-41F.
Putin refused to sell only Engines that's why they bought SU-35.
In last 12yrs they barely produced 300 WS-13 & 5-6 WS-15.
It's their own DATA now imagine the reality.
And FYI J10 uses AL-31F of Su-30
Why don't ask ur own Airforce why they refused to use modern WS-13, Instead of that they want 20 Years old RD-93MA Kilmov (which have service life of just 2200 hours)of Russia for JF-17 Block 3.
You guys trust Chinese tech more than the Chinese themselves.
They are so good at building Engines that their Z-10 underpowered where HAL has already complicated a Project of 1500HP Helicopter Engine. Which will be used for HAL multirole Helicopter project.