Pork is generally eaten at the beginning of spring. According to the climate and four seasons, spring enters during the Qingming solar term in Northeast and Northwest China, spring enters during the Vernal Equinox in North China, spring begins around the time of hibernation in the middle and lower reaches of the Yangtze River, and spring enters during the Rain solar term in the southwest. Only the Spring Festival in South China can be regarded as the beginning of spring.

The Beginning of Spring is not only the first solar term among the twenty-four solar terms, but also an important festival. In an astronomical sense it marks the beginning of spring. The Spring Festival usually starts on February 4th or 5th and ends on February 19th or 20th. The beginning of spring, like the beginning of summer, the beginning of autumn, and the beginning of winter, are all solar terms that reflect the change of the four seasons. The beginning of spring is a solar term with a slight transition. Although this transition is not very obvious, the trend is that the weather begins to warm up, the most severe cold period is basically over, and people begin to smell the breath of early spring.