travelchinaguide.com

LQgeQ TIL the length of the great wall of China is 21,196 km, earth’s circumference is 40,075 km. so Great Wall of China goes half way around the world if it was in a straight line
vPK9K TIL that some of the terra-cotta warriors have been discovered still covered in their original paint, which has been preserved against the oxidizing damage that stripped most of them. They look very different in color.
40Og TIL that there was more time between the start and finish of the Great Wall of China than between the start of Christianity and present day.