What's this word?

This is an ancient seal script, usually read from right to left. Here is a famous joke. From the appearance, people who don't know the seal script can be read as "superman who collects herbs".

A stone carving at the entrance of Qingcheng Mountain became an internet celebrity inexplicably. Wuwei Avenue adopted a modern writing style from left to right, and the "Herb Picking Superman" suddenly became popular and became one of the "four wonders" of China calligraphy.