Why can Yuhua forecast the weather?

This is because the petals of primrose are sensitive to humidity. On the eve of rain, the air humidity will increase. When the air humidity increases to a certain extent, the petals will shrink and tightly wrap the stamens, which indicates that it will rain soon. When the humidity in the air decreases, the petals will slowly spread out, which indicates a sunny day. Local residents always take a look at the Yuhua newspaper to understand the weather before going out, so people affectionately call it the "weatherman".

The working people in our country can predict the rainfall from the color change of peach blossoms. Because the colors of peach blossoms are different in different years, when the peach blossoms are purple, it means that there is less rainfall in that year. When peach trees have pink flowers, it shows that there was more rain that year.