The reason for his surprise is not that there are heartbroken grass here, but that he has determined that the years of those heartbroken grass are longer than those given by LAN's family. In terms of color, they are at least 100 years old. The age of heartbroken grass can be distinguished by its color. The color of grass is generally green for no more than ten years, dark green for more than ten years but less than fifty years, purple green for more than fifty years, blue for more than one hundred years, red for more than five hundred years, and white for more than one thousand years. The...