He warned the young people, saying 'At thirty, one should not be careless, at forty, one should not be indecisive.'

His success is an example of the proverb 'one general achieves success at the cost of ten thousand bones'.

The single point of red in the sea of green in the park was her red dress.

The encounter with him can be said to be 'the events of today are destined by the past.'

He achieved great success in his business, but as the proverb 'A thousand gold pieces' fur is not from one fox's armpit' suggests, it was not something he obtained overnight.

He tried to work hard and study at the same time, and in the end, he experienced the lesson of 'He who chases two hares catches neither.'

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.