中国应选吴冠中的双燕。
第一的贝多芬雕塑像极限片艺术性强！
为所有参赛者点赞！

開個非官方比賽吧。每個國家開一個貼。

You are right. pictorial cancellation has to follow the rules of concordance of place. The distinction  here is the difference between immobile objects including rock, building, etc versus mobile person, art work, goldfish etc.

Bruce Lee travelled to many cities including Hollywood and San Francisco. Some pet owner like you may relocate from Taipei to Kaohsiung and bring your pet goldfish with you by car or train. That piece of rock will stay on 小琉球  until it collapses due to erosion.

Furthermore goldfish is art work and 花瓶石 is photo representation of the real rock, not an art work. If  花瓶石 is painting on postcard then 屏东 is OK.
One example Rouen cathedral photo maximum card must have Rouen postmark but Claude Monet’s painting of Rouen Cathedral can be cancelled in Paris because several such paintings are in the Musee d’Orsay.

Lastly do you know that 屏东 is not on  小琉球 without looking it up on google map? How many delegates have been to 屏东 or 小琉球? How many will research map locations?

Btw when I first started, I had to spend years before senior collectors agree that even pictorial cancellation has to follow the rules of concordance of place.