An eight-character idiom written with a brush for a soldier

Be prepared to defend your home and country.

Serve the country with passion and loyalty.

Strict barriers are in place.

Copper coins and iron walls unite us.

The tiger sitting on the dragon's plate is as solid as gold.

Every man has the responsibility to protect his family and his country.

The above is for reference.

You can also choose to combine or add new words. For example: The tiger is perched on the dragon and the copper wall is iron.