Volunteers distribute anti-drug materials during an activity to mark the International Day against Drug Abuse and Illicit Trafficking in Sanhe, North China’s Hebei province, June 26, 2019.[Photo/Xinhua]

Students visit a theme exhibition on drug control during an activity on the International Day against Drug Abuse and Illicit Trafficking in Sanhe, North China’s Hebei province, June 26, 2019.[Photo/Xinhua]

Artists perform during an activity held to mark the International Day against Drug Abuse and Illicit Trafficking in Sanhe, North China’s Hebei province, June 26, 2019.[Photo/Xinhua]

Volunteers attend a flag-conferring ceremony during an activity held to mark the International Day against Drug Abuse and Illicit Trafficking in Sanhe, North China’s Hebei province, June 26, 2019. [Photo/Xinhua]

People attend an activity held to mark the International Day against Drug Abuse and Illicit Trafficking in Sanhe, North China’s Hebei province, June 26, 2019.[Photo/Xinhua]