The best running script calligraphy.

The running script is of course Wang Xizhi.

Wang Xizhi's Preface to Lanting is called "the best running script in the world" by later generations (see the picture below). Wang Xizhi's former residence is in lanshan district, Linyi, Shandong. Influenced by it, he named it Xiyanhu Street, and Wang Xizhi's former residence was on Xiyanhu Street.