Chinese know lots weapons behind US many years. But Chinese know which weapon is most important.And China put more money on the most important project. Like DF-31, China has DF-31. US's carrier can not enter into 1000KM near china in the wartime. The is Chinese style. Mao chairman said that you...
This is different China with US, China does not like be a police in the whole world, China does not use their highest level weapon. If some countries menace China, They will the highest weapon US does not have like DF-31.
I am Chinese, i think i know we work style. Someone said it will coming in September some days age. Like you said, When J-20 was coming, many peoples and experts said is PS. But it is real. I bet it is real.