A Master on the Tip of the Tongue

A sudden change occurred that year... Everything changed for me. After waking up from the dream, the heaven and earth are solemn, and everything is changing. When breath becomes air. In the new environment, am I still me? The weather is cold and the wind is chilly; when the ice is biting and the chill permeates the whole body, over time, the coldness invades the bone marrow, and I gradually learn to bear the pain it brings. A book said that if a knife is not sharpened, it will not be sharp. If steel is not refined, it will not be able to achieve its glory.