You are new here, and I am old. What do you mean?

You are new here, and my life is old. According to relevant information, this sentence comes from a cross-century dialogue between a 96-year-old grandparent and a 2-year-old grandson in Sichuan Province. "You just came to the world, and I am old." I feel the old man's sigh for the hasty passage of time and his reluctance for the newborn. This conversation was filmed and posted on the internet, which caused a heated discussion and made people feel deeply.