After many months of threats, the US has imposed 10% tariffs on all Chinese goods coming into the country. Helen Qiao, chief economist for Greater China at Bank of America, joins John Lee and Katia Dmitrieva to gauge the impact in the world's second largest economy and what could lay ahead.

Beijing has made its decision. After days of warning of counter measures and urging Washington to enter negotiations and "meet China halfway", it has decided to hit back – or at least threaten to retaliate with its own tariffs.

China's stocks and currency came under pressure as markets returning from a week-long break were greeted by a new trade dispute with the United States and ructions in the global artificial intelligence sector.