The running script Autumn is the work of Ren Zheng, a calligrapher. The overall structure is coherent, and the left and right structures are neat. I believe that everyone may have described the copybook "Lanzhai Ren Zheng Hangshu", which is also my favorite of so many copybooks.
Apart from the "autumn" of running script, I think it looks good and I like the "autumn" of regular script. The picture below is made by Yan Zhenqing. Regular script is characterized by square, each stroke is written very clearly, giving people a very neat overall feeling and very real strokes.
I like autumn in regular script and autumn in running script very much. Everyone's eyes are different. I can practice which one I can practice well.