Chinese President Xi Jinping on Friday called on all countries to strengthen openness and cooperation in science and technology.

Chinese President Xi Jinping, also general secretary of the Communist Party of China Central Committee and chairman of the Central Military Commission, delivers a speech via video at the opening ceremony of the 2021 Zhongguancun Forum on Sept. 24, 2021. (Xinhua/Huang Jingwen)

Xi made the remarks while delivering a speech via video at the opening ceremony of the 2021 Zhongguancun Forum, which is scheduled from Sept. 24 to 28 in Beijing.