How do you know they don’t have miniaturized warheads?

All reports what I have read say that their warheads are still large when compared to other countries, and they haven’t really tested any weapon designs like other countries. How can they reach same level with other countries without testing anything?

http://bos.sagepub.com/content/68/4/96.full.pdf+html

It took Chinese at least 7 tests to make sure their miniaturized warheads (for JL-2, DF-31 and DF-21) work like they were designed to, and one of those tests (May 22, 1992) was around 1MT in yield.
http://www.nti.org/media/pdfs/china_missile_1.pdf?_=1339023443

This is from sinodefence forum.

“RusNEWS.CN reports (3-09-12 Beijing time): Reporter Alexi Yafmov reports: The Chinese Department of defence revealed to RusNews that reports by the Russian media regarding the signing of a 48 Su-35 fighter contract between China and Russia are inaccurate.

The Chinese Department of Defense clarified that : “In recent years, China maintained close strategic partnership with Russia and successfully cooperated in numerous domains. Sino-Russian military cooperation is an important part of Sino-Russian strategic partnership that is being carried out smoothly and has continuously yielded results. Reports that “China and Russia agreed on the purchase on 48 Su-35 fighters, however, have no factual basis.

On March 6th, Russian newspaper Kommersant quoted a Russian military insider when supposedly said that China and Russia agreed to sign a contract which will supply the Chinese military with 48 Su-35 fighters. The contract would have a net worth of 4.0 billion dollars.”

http://chinese.ruvr.ru/2012_03_09/67972636/

PLAAF(?) Y-8GX-8.

New Y-8GX8 ELINT spotted, does anyone know how many ELINT planes Chinese have in service?