Chinese Premier Li Qiang has sent a letter to Japanese Prime Minister Shigeru Ishiba calling for a coordinated response to U.S. President Donald Trump's tariff measures, Japan's Kyodo news agency reported on Tuesday.
The letter, sent via the Chinese embassy in Japan, stressed the need to "fight protectionism together", Kyodo said, citing multiple Japanese government officials.
The foreign ministries of both countries did not immediately respond to a request for comment.
Japan, one of Washington's closest allies, was among dozens of countries targeted by Trump's sweeping tariffs earlier this month and has begun negotiations with the United States to try and resolve the issue.
Relations between Beijing and Tokyo have been strained in recent years by a range of issues from territorial disputes to trade tensions.
