Walking and forgetting and following the wind comes from "Heavy Snow". "Heavy Snow" is a work from the Ming Dynasty, but the author is unknown. It expresses his open-minded mentality of constantly moving forward and leaving those sad things in the wind.
"Heavy Snow": The first cold weather in the world is marked by heavy snow; at the right time, it comes to the world; when winter comes, all is well, and the falling snow is in my mind; not afraid of the passing years, do not rush; listen, and Look, and be calm; stop, forget, and follow the wind.