In which country is the city of Shanghai?

In which country is the city of Ho Chi Minh City? In which country is the city of Da Nang? In which country is the city of Hue? In which country is the city of Siem Reap? In which country is the city of Guangzhou? In which country is the city of Shenzhen? In which country is the city of Xi'an? In which country is the city of Chengdu?