When strong, appear weak. Brave, appear fearful. Orderly, appear chaotic.Full, appear empty. Wise, appear foolish. Many, appear to be few.Advancing, appear to retreat. Moving quickly, appear to be slow. Taking,appear to leave. In one place, appear to be in another.
Manipulation is a theme in this passage. They use juxtapositions to make their point and confuse enemies. It's like Yin and Yang but they're manipulating it...if that makes sense and this passage definitely fits into the theme of manipulation.