Blockhouses, garrison towns, passes built at strategic points, and beacon towers are mentioned to show the magnificence and variety of the Great Wall.
举一反三
- The great wall include _________, __________ and _____________, as well as ____________ along the wall.
- The Great Wall of China is 2,300 years old.It is a wall.
- At several dozen passes along the Great Wall, ________ came into being.
- 中国大学MOOC: Who built the Great Wall?
- To protect lives and peace from wars，the driving force built the Great Wall.