Museo Archeologico Nazionale, Naples, Italy. Late 1st century: Bedroom, from the House of Publius Fannius Synistor, Boscoreale is made. It is reconstructed with later furnishings at The Metropolitan Museum of Art, New York. Late 1st century: Seascape, detail of a wall painting from Villa Farnesina, Rome, is made. Late 1st century: Young Woman Writing, detail of a wall painting, from Pompeii, is made. It is now kept at Museo Archeologico Nazionale, Naples. Late 1st century: Mausoleum under Construction, relief from the tomb of the Haterius family, Via Labicana, Rome, is made. It is now kept at Musei Vaticani, Museo Gregoriano Profano, ex Lateranese, Rome. Late 1st century: Middle-Aged Flavian Woman, is made. It is now kept at Musei Vaticani, Museo Gregoriano Profano, ex Lateranese, Rome. Late 1st century – early 2nd century: Buddha and Attendants, from Katra Keshavdev, Mathura, Madhya Pradesh, India, is made. Kushan period. It is now kept at Mathura Museum. 1st century – 2nd centuries: Tomb model of a house, is made. Eastern Han dynasty. It is now kept at The Nelson-Atkins Museum of Art, Kansas City, Missouri. Inventions, discoveries, introductions Codex, the first form of the modern book, appears in the Roman Empire. Various inventions by Hero of Alexandria, including the steam turbine (aeolipile), water organ, and various other water-powered machines. c. AD 23: The Chinese astronomer Liu Xin dies, he documented 1080 different stars, amongst other achievements. AD 31: the Han Dynasty Chinese engineer and statesman Du Shi (d. AD 38) from Nanyang invented the first-known hydraulic-powered bellows to heat the blast furnace in smelting cast iron. He used a complex mechanical device that was powered by the rushing current against a waterwheel, a practice that would continue in China. AD 78: the beginning of the Saka Era used by South Asian calendars. c. AD 80: Although Philo of Byzantium described the saqiya chain pump in the early 2nd century BC, the square-pallet chain pump was innovated in China during this century, mentioned first by the philosopher Wang Chong around AD 80. Wang Chong also accurately described the water cycle in meteorology, and argued against the mainstream 'radiating influence' theory for solar eclipses, the latter of which was accepted by many, including Zhang Heng. References 1st millennium 01st century