The rise of a "money economy" and urbanization beginning in the Song era led to a professionalization of entertainment which was further encouraged by the spread of printing, the rise of literacy, and education. In both China and Western Europe, the novel gradually became more autobiographical and serious in exploration of social, moral, and philosophical problems. Chinese fiction of the late Ming dynasty and early Qing dynasty was varied, self-conscious, and experimental. In China, however, there was no counterpart to the 19th-century European explosion of novels. The novels of the Ming and early Qing dynasties represented a pinnacle of classic Chinese fiction.