https://apnews.com/e49b1006a0e3494282f70f08e2b80ebf > BEIJING (AP) — U.S. Treasury Secretary Steven Mnuchin said Tuesday he hopes for "substantial progress" in talks with Chinese officials aimed at ending a tariff war over Beijing's technology ambitions. > Mnuchin and Trade Representative Robert Lighthizer were to have a working dinner and then meet Wednesday with Chinese negotiators to discuss the standoff between the two biggest global economies, which has rattled financial markets.