The period between the foundation of the Han dynasty and Wang Mang's reign is known as the Western Han dynasty (ចិនសម័យ: 西汉; ចិនបុរាណ: 西漢; ភិងអ៊ិង: Xī Hàn) or Former Han dynasty (ចិនសម័យ: 前汉; ចិនបុរាណ: 前漢; ភិងអ៊ិង: Qiánhàn) (206 BC – 9 AD). During this period the capital was at Chang'an (modern Xi'an). From the reign of Guangwu the capital was moved eastward to Luoyang. The era from his reign until the fall of Han is known as the Eastern Han dynasty (ចិនសម័យ: 东汉; ចិនបុរាណ: 東漢; ភិងអ៊ិង: Dōng Hàn) or the Later Han dynasty (ចិនសម័យ: 后汉; ចិនបុរាណ: 後漢; ភិងអ៊ិង: Hòu Hàn) (25–220 AD).