"old junk that barely works" Keep believing that.   I know what they got and those do work, and they are not from the Chinese only.  But some 21st Century Russian Federation Technology, and some Chinese copies of that 21st Century Russian Federation Technology were that counts.   You can thank President Obama's actions 2011 that resulted in the Democratic Republic of North Korea and the Muslim Nation of Iran getting all that 21st Century Technology including lots that the Chinese Cyber Army "acquired" from U.S. Civilians, that have not even been built yet for the U.S. Military.