China's architecture had been developed in the dynasties with a long history, but which dynasty was the most prosperous had to be measured according to different standards. Here are some factors that might help answer this question: - Construction technology level: The Tang Dynasty (618 - 907) was one of the most prosperous periods of Chinese construction technology. The buildings of the Tang Dynasty were famous for their magnificence, artistic sense and decoration, such as the Big Wild Goose Pagoda in Chang 'an and the grottoes of Foguang Temple. - The Song Dynasty (960 - 1279) was one of the most diverse periods of Chinese architecture. The buildings of the Song Dynasty were featured by practicality and economy, such as the Liuhe Pagoda in Hangzhou and the Lingyin Temple in West Lake. - Construction scale: The Ming and Qing Dynasties (1368 - 1722) was one of the most magnificent periods in China. The buildings of the Ming and Qing Dynasties were often beautifully decorated and well-structured, such as the Forbidden City and the Temple of Heaven in Beijing. Therefore, to answer the question of which dynasty was the most prosperous in architecture in China, it needed to be considered according to different standards. However, in general, the architecture of the Tang Dynasty and the Ming and Qing Dynasties had high artistic value and practicality. They were the two peaks of ancient Chinese architecture.