The East Bay area was very lively in the old days.

He hung a picture on the eastern wall.

The poetry of Yue Dong is highly valued for its literary worth.

I was fascinated by the beautiful scenery of Eastern Nagano.

His father is a very strict person.

During the Yuan dynasty, Chinese culture developed greatly.

This is my original.

Understanding the original principle is important for solving problems.

The budget for this project has been reduced by 20%.

What is the source of this information?