We don't have any information about Yu Xia's state system, economic development, people's life, science and technology and culture, so we can't say that Yu Xia didn't exist. For example, the history of Japan is recorded in China's history books, and Japan has no historical materials, but it cannot be said that there is no Japan in history.
Or it is estimated that the historical traces of summer are deliberately hidden by human factors. There are some phenomena to prove this problem. For example, before the Shang Dynasty, there was no literature record, but there was no written record in those years, and the whole text carrier was annihilated, leaving only Oracle Bone Inscriptions, which was intentional. The biggest suspect is actually the later Western Zhou regime, or someone specifically wiped out all the documents of the previous dynasty to consolidate its orthodox legal status, such as Sanxingdui site. There are traces of burning and looting everywhere, and their intention to destroy the traces of civilization is quite obvious. These evidences may show that the history of Xia is difficult to verify, and it may be artificially manipulated.
It's normal that it's not easy to find evidence. It is precisely because of the advanced civilization of Xia dynasty that it broke away from the nomadic fishing and hunting lifestyle and entered the plain area. However, buildings and figures in plain areas are short of stones that can be preserved for a long time. Buildings are civil structures, and figures can only be bamboo slips, which are difficult to preserve for a long time. The only thing that can be preserved for a long time is bronzes, but bronzes can easily be recast into bronzes of new dynasties when dynasties change, and the bronze inscriptions of the last dynasty are also destroyed, resulting in the disappearance of the only cultural relics evidence.
The loss of Jiuding and the loss of twelve bronze men who collected weapons from all over the world by the first emperor are proof. 12 bronze figures have also left damage records because of their age. Moreover, it is the custom of Shang Dynasty to attach importance to tombs. The history of Shang dynasty can be confirmed by tomb archaeology, but Xia dynasty is probably a thin burial custom, so it is difficult to confirm the history of Xia dynasty by tomb archaeology.
There is no need to prove with great fanfare that this is the confidence of China people. Is everything described in the Bible true? Foreigners believe, and we agree. Why should we prove to them what is recorded in our history books? These are all things that flow in our blood. Why should we prove them? We just want to pass on our history, which belongs to cultural bullying. How to find their ancient cities in Europe requires us to follow their same data before we can find them.
They asked for a venue. Our site is different from their stone site, which doesn't count. Cultural relics are necessary, not counting our cultural relics of 8,000 years ago. They asked for records, but our historian's records don't count. Their myth can be regarded as history. Whether foreigners agree or not, our Chinese nation has been passed down for five thousand years! We are still getting stronger. Don't bother yourself.