Getting 60days L Visa without return flight proof (but with train ticket to Vietnam)...

I am an Italian citizen wishing to apply for L type, I have entry flight ticket to Beijing, proof of accomodation and proof of train ticket to leave the country (from Nanning to Hanoi) before 60 days. Is it this acceptable to get the L type, though without having a return flight to my homeland?
Thanks in advance for your kind reply.