Everyone has an unforgettable past, whether the ending is joy or sorrow, separation or separation, they will be treasured in the bottom of their hearts. When you recall every bit of the past years later, it will always be accompanied by a lot of sighs. You try to find yourself in the memory, but in the end you find that you are nowhere to be found... Say goodbye to the flower season when you are 16, enter the rainy season when you are 17, and welcome the foggy season when you are 18. Three years seems to be very short, but there are 26,280 hours. What happened in these 26,280 hours took us ten years to read.