72 hour visa – multiple stays

I will arrive into Bejing on Finnair (route London – Helsinki – Beijing), 48 hours later and on a separate ticket, I fly Beijing – Tokyo on Japan Airlines. I return Tokyo – Beijing three days later on Japan Airlines, spend one night in Beijing, the fly Beijing – Helsinki – London on Finnair. I hold a UK passport. Would I qualify for the 72 hour free transit for both short stays in Beijing?