President Xi Jinping said China must resolve issues in key technological fields from the bottom up, state media reported, as the country deals with a growing number of mainly U.S. export controls on advanced technology.

Xi said on Tuesday during a study session of the 24-person Politburo, one of the top decision-making bodies of the ruling Chinese Communist Party, that China needed to strengthen basic research in science and technology if it is to achieve self-reliance and become a global tech power, state news agency Xinhua reported.