Chinese calligraphy began over 3000 years ago. Over the years several distinct styles of writing evolved: oracle, bronze, seal, clerical, regular, semi-cursive (running) and cursive (grass). The Cultural Revolution (1966-1976) overturned the respect shown to these traditional modes. However, calligraphy flourished in the format of the big-character posters (大字报, dàzì bào). In the years following the revolution, Chinese calligraphy became more abstract. One of the most important modern calligraphers is Wang Dongling (王冬龄). Among his many achievements is a new writing style that he calls “chaos script” 亂書 luànshū.