We are very sad to announce that, Dr./Prof. Tianchu Li, passed away in Beijing on 28 December 2022 at the age of 77 due to a fatal disease.
Dr./Prof. Tianchu Li was a Chief Scientist of the National Institute of Metrology (NIM) of China, a member of the Chinese Academy of Engineering (CAE), a renowned metrology scientist, a leader in the development of China's national time and frequency measurement system, and a great contributor to the advancement of time and frequency measurement science.
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