He defeated the enemy using the Thirty-Six Stratagems.

We celebrate our wedding anniversary on the twenty-sixth day of the month.

He is studying the shape of a tetrahemihexahedron.

The Six-Tusked White Elephant is said to be a legendary creature.

This is a model of a mutetrahedron.

The 正十六胞體 is one of the regular polytopes in four dimensions.

The 正六百胞體 is one of the regular polytopes in four dimensions.

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

The 600-cell is one of the regular polytopes in four dimensions.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.