In a statement, China's commerce ministry has responded to Donald Trump's threats to impose an additional 50 percent tariff on Chinese goods by saying Beijing will "fight to the end". With the latest US threat, import duties on China could total as much 104 percent, further ramping up the trade war between the world's two biggest economies. In this edition, we look at what Beijing is doing to support its domestic market, for instance by loosening its grip on its currency.