Washington has said it would implement tariffs on $34 billion of Chinese imports on July 6, and Beijing has vowed to retaliate in kind on the same day.
Earlier, Chinese Foreign Ministry spokesman Lu Kang said China was ready to act, though he did not confirm the start date for Chinese tariffs.
“China has already made preparations,” Lu told a daily news briefing.
“As long as the United States issues a so-called tariff list, China will take necessary measures to firmly protect its legitimate interests,” he added, without elaborating.