San Francisco to Kunming via Shanghai Pudong & Hongqiao airports.

visiting Kunming via Shanghai Pudong & Hongqiao airports from San Francisco by China Eastern Airlines. Whether direct boarding pass & registered baggage arranged upto Kunming from San Francisco airport? Whether airport transfer between Shanghai Pudong and Shanghai Hongqiao airports will be arranged by China Eastern Airlines? If not, how to get transferred from one airport to another? what is the distance between these two airports? I will have only 4 hours time for layover/changeover as per ticket issued by airlines.