China reached into the U.S. heartland in its escalating trade war over President Donald Trump’s tariffs, using an advertising supplement in Iowa’s largest newspaper to highlight the impact on the state’s soybean farmers as “the fruit of a president’s folly.”

The four-page section in Sunday’s Des Moines Register, which carried the label “paid for and prepared solely by China Daily, an official publication of the People’s Republic of China,” featured such articles as one outlining how the trade dispute is forcing Chinese importers to turn to South America instead of the U.S. for soybeans.

The advertising targets a state critical to Trump and Republicans. The U.S. is imposing tariffs on an additional $200 billion worth of Chinese imports starting Monday. Meanwhile, $110 billion of goods from the U.S. will become subject to Chinese retaliatory tariffs around the same time.