China hit back at the U.S. with tariffs of its own. Beijing also said it was starting an antitrust probe into Alphabet’s Google.

After a 10 percent tariff on Chinese products took effect on Tuesday, China announced retaliatory measures, including tariffs and an investigation of Google.

Donald Trump’s quest to reform the United States economy by implementing tariffs is moving quickly. The U.S. President had barely been back in the White House for a week when he started taking steps toward levying tariffs against Canada,