When the wind blows over the window sill, I always subconsciously look at the old sycamore tree outside the window. The leaves are turning green in different shades under the sun, which is like the light in the eyes of the leaves when they smile. Time passes quietly, and in the blink of an eye, Ye Zi and I have walked through the entire four seasons side by side. This year, there are no earth-shattering events, but there are countless tender details hidden in it, like a leaf gently falling on the palm of the hand, soft, warm, and with a mark that is unique to us.