Trade war begins as China strikes back against US over tariffs

The Trump Administration has fired the first major shot in a looming trade war with China.
 
After weeks of threats, US tariffs on $34bn of Chinese imports came into effect.
 
Beijing has vowed to retaliate and is searching for non-US suppliers for some of its imports, setting the stage for a prolonged conflict between the world's two biggest economies.

Al Jazeera's Rob McBride has more from Beijing, China.