Ancient China Crossword Puzzle

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Across
  1. 3. A family of rulers.
  2. 7. Protected China from invaders and to preserve its culture form barbarians.
Down
  1. 1. Bones used as paper in Ancient China.
  2. 2. A trade route that linked the Western world with the Middle East and Asia.
  3. 4. Opposites that balance each other throughout nature.
  4. 5. A philosophy that focuses on living life according to the fundamental principle of Tao.
  5. 6. A famous person born at 551 BCE and was a Chinese philosopher.