Why can't the spring rain shower?

"The spring rain lasted for 7749 days."

What is said here is that it rained when the beginning of spring solar term came. How exactly?

"Rain-drenched spring bull's head", the "rain-drenched" here is the rainy weather. It has been raining all the time, and it is wet everywhere. Farmers and cows are caught in the rain when they go out. "Spring Cattle" refers to the custom of "whipping spring cattle" or "beating spring cattle" in beginning of spring solar terms, which means that when spring comes, farmers should start to consider agricultural planting, and cultivators should practice their physical strength for dry spring ploughing, so there is the custom of "whipping spring cattle". The "spring bull's head" mentioned here is the first day of the spring solar term, or the first day of the spring solar term.

It shows that it rained on the first day of the solar term in beginning of spring, and the cow's head was plowed in spring. And this kind of weather will worry farmers, because:

"Worry about July 49" The "July 49" mentioned here means that farmers have to worry about it for the next 49 days. Why worry? Due to the heavy rain, cold weather and late return in spring, winter crops such as wheat and rape were sown late in spring, which affected the late jointing growth. This is what farmers are worried about.