Things about the Song Dynasty: A glimpse into Song people’s views on marriage and love from "Do you know, do you know, they should be green, fat, red and thin"
The founding empress of the Liao Kingdom, Shu Luping, cut off her arm and forced her eldest son to betray her with a ruthlessness comparable to that of Wu Zetian
Discovery of armored fish from the Middle Devonian 390 million years ago; progress in research on flexible thick-film organic solar cells; progress in calculation of three-dimensional depth reservoirs