Which of Tao's calligraphy comes first, running script or regular script?

First there is regular script.

The order in which regular script and running script appeared was that regular script appeared first and then running script. Regular script appeared at the end of the Western Han Dynasty, while running script appeared at the end of the Eastern Han Dynasty.

For beginners, they should learn regular script first and then running script. Running script is fluid, and calligraphy is more difficult for beginners to control and requires a long time of practice.