China offered to purchase nearly $70 billion of U.S. farm, manufacturing and energy products if the Trump administration abandons threatened tariffs, according to people briefed on the latest negotiations with American trade officials. In weekend talks in Beijing, Chinese negotiators led by Liu He, President Xi Jinping’s economic envoy, presented a U.S. team headed by Commerce Secretary Wilbur Ross a package that includes Chinese companies buying more U.S. soybeans, corn, natural gas, crude oil, coal and manufactured goods. Chinese and U.S. officials estimated the value of the package at nearly $70 billion in the first year. President Donald Trump has...