China is strong enough today, they print so much money they can buy their treasures back. No one invades China because they have nukes. Conventional capabilities are another matter.
One day, when we are strong enough, they will come back to China for free, because they belongs to China. The process to became strong perhaps will take generations. But we have our patient. China has a long history.
Some day when France is weak enough, it will also lost all of its treasure. In fact, it happened in history. You are also survivors of disasters in history, like China. Of course the disasters happen in different time. We are lucky as we only lost our treasure, but we people are still there. Some nation is so weak that they have lost not only treasure but also their lifes in history.
History is like a wheel, it will rotate. As what France get from German in WWI pays back in WWII and what German get from France pays back after WWII. There are no need to boast what you get in history. Because it will pay back.
As long as China's history is keep writing, it will be strong someday, and what taken from China will go back to China. We sincerely wish it is peacefully.