An ancient society, by some measures, may have been more advanced in tattooing than we are today. A recent CUHK-led study has revealed incredibly intricate tattoos, with details as fine as 0.1-0.2 mm, on 1,200-year-old mummified remains from Peru’s Chancay culture. Using laser-stimulated fluorescence technology – a technique originally developed to study dinosaur fossils – the research illuminates the artistic sophistication of this ancient civilisation.