参考译文：The Song dynasty began from 960 and ended in 1279. During the period, China had witnessed huge growth in the economy, making it the most advanced economy in the world. Science and technology, philosophy and mathematics also flourished at that time. In the Song dynasty, China was the first country in the world to issue paper money, use gunpowder and invent movable-type printing. With rapidly increasing population, more and more people moved into the city, in which entertainment venues were very busy. People could enjoy various social life, getting together to appreciate and trade precious artworks. The Song dynasty also enjoyed an advanced government system in the world. All of the government officials were selected and appointed through the competitive examination.