This sentence came from the British film " The Wasteland ", which meant " meeting you in the vast sea of people, meeting the people you meet, in the endless wilderness for a long time, not a step earlier, not a step later, just happened to meet." This sentence expressed the chance of meeting someone in life, and this kind of chance was often unpredictable and uncontrollable. It emphasized the infinity of time and the vastness of the wilderness. Even if we keep moving forward, we can't predict the future, let alone guarantee who we will meet. However, it was precisely this uncertainty and chance that made the encounters in life precious and meaningful.