The Commonwealth of Independent States is an intergovernmental organization formed by part of the former Soviet Union.

In Christianity, God is considered as the Trinity of the Father, the Son, and the Holy Spirit.

A tesseract is a four-dimensional geometric shape.

A 5-cell is a simple convex polytope in four dimensions.

In organic chemistry, the concept of cis-trans isomers is important.

The study of filterable pathogens is an important part of virology.

In organic chemistry, the concept of conformational isomers is very important.

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.

I am learning Simplified Chinese.

I have started learning Traditional Chinese.