I specialize in pharmacology research.

He is majoring in Sinology.

He is writing a thesis on fluid dynamics.

He is known as an expert in palaeoclimatology.

I am majoring in econometrics at university.

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.

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