In the beautiful coastal city of Qingdao, how does the size and direction of the shadow of objects change in the sun during the day?

This question is interesting and worth discussing. Qingdao is similar to other northern cities, and it will be different with the season and the time of day. It is early winter: from morning to noon, the shadow changes from long to short (more obvious in summer), and the shadow turns to the north-west direction. From noon to night, the shadow changes from short to long (more obvious in summer), and the shadow is east to north.