The 16-cell is one of the convex regular polytopes in four dimensions.

He started a business without a plan, forgetting the lesson of 'peach and chestnut seeds take three years to bear fruit, persimmons eight years.'

Whenever he faced a difficult situation, he always said, 'The best of the Thirty-Six Stratagems is to run away.'

He faced difficulties with the spirit of 'one eye, two feet, three gallbladders, four strengths'.