China's countermeasures against U.S. unreasonable tariffs citing fentanyl remain effective: FM spokesperson

BEIJING, May 14 (Xinhua) -- The United States unreasonably imposed two rounds of tariffs on China under the pretext of fentanyl, and China promptly took countermeasures to firmly safeguard its legitimate rights and interests. "These countermeasures remain effective," a Chinese foreign ministry spokesperson said on Wednesday.