Complex sentence: The "Thought of Etiquette" decides the expression of planning and architecture in ancient China.In China's traditional urban planning (the ruling class use physical boundaries to protect themselves. ") The Great Wall" is one of most famous physical boundary in China.
Split into simpler sentences: The "Thought of Etiquette" decides the expression of planning and architecture in ancient China.In China's traditional urban planning, the ruling class use physical boundaries to protect themselves. "The Great Wall" is one of most famous physical boundary in China.