The stone opened the door. The next sentence, sincerity, is that people's sincerity has been achieved, which can move the world and split the stone. It is often used to mean that any difficult problem can be solved as long as they concentrate. A sentence similar to the sincere pursuit of a stone has perseverance, a stone can be carved, and a journey of a thousand miles begins with a single step, pursuing goals, persevering, learning endlessly, and bravely climbing the peak.