Travelling to Shanghai from Korea (British citizen)

I am a British citizen and I would like to travel to Shanghai without a visa as my entire stay will be less than 72 hours. I won't be in transit as I'll be flying direct from Korea and will I'll return on a direct flight to Korea. Can I still apply under the 72 hour visa free entry policy or do I actually need to be 'in transit' for this to work?

Thanks
Jay