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In page Calligraphy:

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Cursive styles such as xíngshū (行書/行书)(semi-cursive or running script) and cǎoshū (草書/草书) (cursive, rough script, or grass script) are less constrained and faster, and movements made by the writing implement are more visible. The stroke orders of these styles vary more, sometimes creating radically different forms. They descend from the clerical script, at around the same time as the regular script (Han dynasty), but xíngshū and cǎoshū were used for personal notes only and not as a standard. The cǎoshū style was highly appreciated during Emperor Wu of Han's reign (140–187 CE).[citation needed]