Double Transit: Amsterdam to Shanghai, Shanghai to Guangzhou then Guangzhou to Christchurch NZ

Hello, I am flying from Amsterdam to Christchurch and i have a double transit in china, the first is in shanghai 18 hours then Guangzhou for 9 hours. Is it possible to leave the airport in Shanghai or Guangzhou? I will be in china for more than 24 hours so the 24 hour transit visa will not apply and because i stop in 2 locations in china does that also mean that the 72 hour free transit would not work either. I only realized this today and am leaving tomorrow.. Do i have any options at all in regards to leaving the airport in either shanghai or Guangzhou? Thank you for your help.