Phenology is the phenomenon of corresponding seasonal changes in living things with the seasonal changes of the climate throughout the year. The factors affecting phenology include the differences in latitude, longitude, latitude, and time. The phenological phenomena reflected in the following verses are affected by altitude differences:. ['the sunrise river flowers red wins the fire, spring comes river green as blue.', 'Three or Two Peach Blossoms Outside the Bamboo, Spring River Plumbing Duck Prophet.', 'April in the world is full, and the peach blossoms of the mountain temple begin to bloom.', 'why should the flute blame the willow, the spring breeze will not pass the Yumen Pass.']