Small fresh autumnal equinox picture desktop wallpaper, wallpaper size: 1920x1080, the autumnal equinox is the sixteenth of the twenty-four solar terms and the fourth solar term of autumn.The autumnal equinox is here, and the autumn busyness has begun. The autumn weather is cool and the autumn mood cannot be stopped. The autumn wind is blowing. I wish my farmers friends a bumper harvest!