He said, 'Man shall not live by bread alone,' teaching me that spiritual satisfaction is also important.

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

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

This is a model of a mutetrahedron.

This mutetrahedron has a very unusual shape.