China's narcotics control agency has warned against the manufacture and sale of substances that can be used to make illegal drugs, a day after President Xi Jinping said China would stem the export of items used to make the opioid fentanyl.
United States President Joe Biden said Wednesday China will take steps to tackle the flow of fentanyl - a synthetic opioid responsible for the death of over 70,000 people last year - into the country.