寒来暑经春复冬，看得浮生总是空。
Minute by spring cold winter to summer, always seen shimmering air.
经、史、子、集四部颜色依春、夏、秋、冬四季而定，分别是绿色、红色、白色（或浅蓝色）、灰黑色。
Following the symbol colors of four seasons, Spring, Summer, Autumn and Winter, book covers of the Four Divisions were respectively printed green, red, white (or light blue) and dark grey.
经、史、子、集四部颜色依春、夏、秋、冬四季而定，分别是绿色、红色、白色（或浅蓝色）、灰黑色。
The colors of classics, history, philosophy and belles-lettres were selected according to spring, summer, autumn and winter seasons, which were green, red, white or light blue and grayish black.
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