Source: Study suggests blood helped keep China’s 2,000-year-old Huashan cliff art from washing away
How Blood Helped Protect 2,000-Year-Old Cliff Art in China
A recent study reveals that blood may have played a crucial role in preserving the ancient Huashan cliff art in China, which has stood for over 2,000 years. This unexpected finding highlights the unique materials used by ancient artists to protect their work from the elements.