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 was promoted to the chief operating officer of the company.

He was appointed as the chief financial officer of our company.

He was appointed as the chief executive officer of the company.

He always keeps the proverb 'Do not make friends with those who are not like you' in mind.

He is the chief technical officer of our company.

He is active as the chief information officer of our company.

After he left, she remembered the proverb 'feelings for a departed one grow weaker over time'.

Workers of the world, unite, the time has come to show our strength.

The International Workers' Association is historically an important organization.