How Can He Be Original?

There is a girl who accompanies me to play music, chess, calligraphy and painting, and enjoy poetry and wine. There is a young man who stays with me through thick and thin, and is immune to all difficulties. There is also a group of people who work with me in the morning and in the evening, and keep writing. Half a year of green mountains and half a year of clouds. From then on, the wild geese grow old, the sound of the flute ceases, and old friends do not gather together.