For example, "There are three or two peach blossoms outside the bamboo, and the duck prophet warms the spring river." (Su Shi's topic Hui Chong's "The Night Scene of the Spring River") In early spring weather, ducks first perceive the spring water heating and play in the water.
"In cold weather, waterfowls depend on each other, and a hundred is a group play. When pedestrians can't afford it, they suddenly hear the ice ringing in Qi Fei. " (Qin Guan's "Returning from Guangling") In late winter, waterfowl depend on each other, and there is a sound of ice, and the birds fly in surprise. Ducks and birds are both messengers of spring.
"It rains at home in Huangmei season, and frogs are everywhere in the grass pond." Three kinds of images in Zhao Shixiu's poem "Water Threshold to Send Heart" show the seasonal characteristics of plum when it is yellow in late spring and early summer.
Huang Chao's "On Chrysanthemums" said: "The rustling west wind is planted all over the courtyard, and it is hard to come with butterflies with cold hearts and fragrant flowers." Chrysanthemums wither, butterflies fade away, although there is no word "autumn", but the coolness of autumn comes to my face.
As for Li Bai's "Song of the Sai Xia", it leads readers to another world: "In May, there was snow in Tianshan Mountain, but there was no flowers, only cold, and willow was heard in the flute, but spring scenery was never seen." May is in midsummer, and it is already the day when flowers wither in the mainland. However, Tianshan Mountain (Qilian Mountain), which is located in the northwest frontier, is still covered with snow, and there are no willows and flowers, indicating that there is neither summer nor spring and autumn at an altitude of more than 4, meters in the Yellow River Basin. It is not difficult to see the great difference in climate between the mainland and the Great Wall.
The agricultural and military activities of forefathers are often seen in ancient poems involving pen phenology. For example, Fan Chengda's "Four Seasons Pastoral Miscellaneous Fun": "Butterflies both enter cauliflower, and no guests come to Tianjia for a long time." These two poems, written in the late spring countryside in the south of the Yangtze River, set off the busy farming of farmers and women through the description of butterflies entering cauliflower. Let's look at Wen Tong's "Morning Clear to Baoenshan Temple": "The smoke is far away and the gulls are falling, and the sunshine is high and the forest is flying. The barley was not admitted to the nursery late, and the young silkworm was lying alone. " The first part depicts a vivid picture of distant mountains, high forests and wild birds flying; The second part wrote about the busy scene of farmers and women harvesting wheat, whole vegetables, picking mulberry and feeding silkworms at the turn of spring and summer, which was kind and touching. And Lu Lun's "high in the faint moonlight, wildgeese are soaring, tartar chieftains are fleeing through the dark. And we chase them, with horses lightly burdened, and a burden of snow on our bows and our swords "(the third part of" The Next Song ") is about marching and fighting: the enemy fled at night, and the geese flew in surprise, which aroused the vigilance of our general and led the soldiers to chase after the enemy, which fully demonstrated the heroism of the Chinese people.