Pre-historic China is home to some of the most incredible structures that hint at advanced civilizations long before our current historical records begin. Among these are the Yangshan Quarry, the Longyou Caves, and the numerous pyramids scattered throughout China, often shrouded in mystery and suggesting a legacy of pre-flood megastructures. All of these ancient sites and megalithic structures have some kind of machine marks that suggest they were built by an advanced civilization lost to history. Watch next: Pre-Egyptian Technology Left By an Advanced Civilization https://youtu.be/K3uiMsqptOs Join us in fueling our mission to create insightful videos backed by thorough research by supporting us on Patreon or PayPal: https://patreon.com/universeinsideyou https://paypal.com/donate/?hosted_button_id=XSCP6D3HSBWEL Your support can help us dive even deeper into topics that matter, enabling us to produce engaging content that informs and inspires. By contributing, you're not just backing a project – you're empowering a wealth of knowledge to be shared. Stand with us as we strive to bring meaningful videos to life. Every contribution counts. Discover a world of creativity at our art and merchandise shop: https://teespring.com/stores/universe-inside-you-2 Join us on: Instagram: https://www.instagram.com/universe.inside.you Facebook: https://www.facebook.com/universalloving For Spanish-narrated videos, visit our Spanish channel: https://www.youtube.com/channel/UCrj10lembQkoijcXv6Bn55g/ #universeinsideyou