Round trip

Hello! I would like to travel in August to Beijing from Budapest (Hungary) by plane for tourist reason. I am a hungarian citizen with hungarian passport. Do I need a return ticket to enter your country? (BUD-Beijing-BUD)? Or is it a good solution to flight from Beijing to Kuala Lumpur/Singapore and travel from there back to my country after the China trip?
If possible, I would like to fly to Malaysia after spending circa 1.5 weeks in China and later come home from Kuala Lumpur, not from China. So I would like to buy a one-way ticket to China from Hungary and ticket from China to Kuala Lumpur.
Thank you in advance,
Tunde