What is the woman in the conversation?

F: If you look this way, you will see the beautiful scenery of the Great Wall.
M: How nice. Which part of the Wall was built during the Ming dynasty?
F: The one where we took photos this morning.

M: Oh, I forgot. It is your birthday today.
F: Never mind. My son and I usually celebrate our birthday together. His is just one day after mine, on the fourth of July.