okinawa to shanghai to bangkok

Shanghai on 21 April-25 April 2017 departing from Okinawa JP. I want to use the 144 hr free transit to visit Disneyland in Shanghai. I wanted to know was this possible if I have a 4hr layover at Kumming airport to my final destination in Bangkok. I heard that I couldn't use this free visa if I have any layovers in China. Even though it would not exceed the 144 hr and i would already have my ticket so no customs. thanks