Transit to nepal via Guangzhou

hi! I'm flying from Paris, to Chengdu, to Nepal with a 9 hour layover in Chengdu. it is possible to use the transit entry permit as I cannot get my entry permit for Nepal until I arrive there. I see the requirements are to have your follow on 3rd country visa with you as part of the required paperwork. But for Nepal you get your visa when you land there. HELP! thanks!