With an area of about 1,410 square kilometers, the Yellow River Estuary is the most extensive, well-preserved and youngest wetland ecosystem in a warm temperate zone in the world. In fall, as the temperature varies widely from day to night, the halophytes growing on the beach turn from green to red, resembling a huge red carpet. October is the best time to enjoy the stunning view, especially during the National Day holiday, attracting throngs of tourists eager to take pictures.