How can cultural relics lost overseas in China be returned unconditionally? Where is the problem of cultural relics recovery?

Why do people pay too much attention and spend so much money now? First, the legal procedures for recovery are too complicated and it is unlikely to have any results. Second, China people pay too much attention to the past, so it is better to spend this money on innovation and people's livelihood. Third, don't be called by outsiders. Some old things are worth hundreds of millions, which are undoubtedly looted by the second "Eight-Nation Alliance". China and the world. As long as it is preserved, it will be different if it is put there. China is strong again, which is right. At first, our ancestors didn't care what we used. What we care about is that future generations don't live up to expectations and don't play with "things"! !