London - Shanghai - Paris - London for 144 hour free transit, or is there a better way?
I will be visiting Shanghai for under 144 hours. Ideally I would just fly from London to SH and back to London, but one must enter a third country for it to be valid?
Is there a better route to take? (quicker/ cheaper?)
Also, do I need to do anything prior to arriving at the airport in London to arrange the visa free travel?
Thanks
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