His parents died in an accident when he was young, and his grandfather Sun Lao, known as "the most knowledgeable in the village", raised him single-handedly. My childhood memory is running with my grandfather in the mountains and listening to him tell all kinds of "rules" and "stories" about the mountains. I have some doubts about the "dragon veins" and "spirituality" mentioned by my grandfather, but I believe in science more. He has a somewhat rebellious personality and tried to leave the mountains to study and live in the city, but in the end he chose to become a forest ranger because he could not let go of his grandfather and the forest, and stayed in the forest area closest to home...