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Imagine wearing a magic hat that allows you to write words down just by thinking of them. In your opinion, it may only appear in a science fiction, 1． They used brain-computer interface (BCI, 脑机接口) technology to write the Chinese “fu”. “It’s ‘written’ by a robotic (机器人的) arm controlled by our researchers’ minds,” said Xu Mingpeng, a teacher at the university.

In the lab, two researchers wore hats with sensors (传感器) while keeping their eyes on a computer screen to “mind write” “fu” on the red paper. At last, 2．

In fact, BCI technology has already been used in several different areas. In 2016, Chinese astronauts Jing Haipeng and Chen Dong used it in the Tiangong Ⅱ space lab. They tested a BCI system (系统) in space for the first time. It is hoped that in the future, astronauts can use these systems to do difficult tasks, 3．

BCIs can be used in smart homes in the future. For example, 4． BCI technology can also help with the disabled. The people who have lost their hands or arms can use BCIs to write messages and surf the Internet.