I would say that these terms illustrate that directions and words like "middle" are relative. For the Europeans China was far east from their point of view, but for China it was in the middle of what was relevant for them. It also shows that each place considers its own place as the center of their world: every other place will be seen through its relation with it.
This is true because even if that grandparent was to change from Jewish to Christianity they would still be considered Jewish and the Nazis thought it was passed down to the grandchildren.
If the time school begins get pushed back later in the morning, students can work on homework late and still be able to get all 8 hours of sleep. This will keep them more awake and paying attention in class.
