Day after day, he continued to strive to solve the problem.

How do you read Tangut script?

The Tangut language is one of the ancient languages of China.

Finding the Summer Triangle is helpful for remembering constellations.

Rurika is my best friend.

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 is the chief technical officer of our company.

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