answer: #Person2# introduces the Mid-Autumn Festival to #Person1# about the story of Chang'E, meaning of 'round', and the three-day holiday.
documents: #Person1#: Could you tell me something about the Mid-Autumn Festival? I find it also very interesting.
  #Person2#: OK. It falls on the 15th day of the eighth lunar month. It is said that there is a beautiful goddess Chang'E on the moon who had eaten some sort of elixir and had to depart her husband. She is always expecting to see her husband again. So, later we have the traditional idea that when there is the full moon, it is time for the family members to come together.
  #Person1#: So, I understand why people eat moon cakes on that day.
  #Person2#: You are right. In China, 'round'is an auspicious word. The moon cakes are in round shape.
  #Person1#: Is it official?
  #Person2#: It was not in the past. But from 2008, we can enjoy a three-day holiday for this festival.