In the Tang Dynasty, regular script reached its heyday, and a large number of regular scripts emerged. In the early Tang Dynasty, Emperor Taizong was a "book fan" and the whole upper class was obsessed with calligraphy. Calligraphy has also become one of the essential skills of an intellectual, so the popularization of calligraphy has a good foundation, making the Tang Dynasty the golden age of calligraphy. In the early Tang Dynasty, Ou Yangxun, Yu Shinan, Xue Ji and Chu Suiliang all went down in history because they were good at regular script. In the late Tang Dynasty, Yan Zhenqing and Liu Gongquan had the greatest influence on the innovation of regular script, which was later called Yan Liujin!
Today, the regular script or original works we are talking about are basically formed in the Tang Dynasty, and there is basically no change and innovation after the Tang Dynasty, so it should be said that regular script flourished in the Tang Dynasty!