Prof.Guang-Xian Xu,the Editor-in-Chief of Journal of the Chinese Society of Rare Earths(JCSRE,in Chinese)and Journal of Rare Earths(JRE,in English),was a distinguished chemist and educator of China.He was a respected presiding figure in the area of rare earth science in China,and an eminent pioneer in the realm of science,technology and industry of rare earths in the world.Prof.Xu was born in Shaoxing,Zhejiang Province on November 7,1920.He received his B.S. Prof. Guang-Xian Xu, the Editor-in-Chief of Journal of the Chinese Society of Rare Earths (JCSRE, in Chinese) and Journal of Rare Earths (JRE, in English), was a distinguished chemist and educator of China. He was a respected presiding figure in the area of ​​rare earth science in China, and an eminent pioneer in the realm of science, technology and industry of rare earths in the world. Prof. Xu was born in Shaoxing, Zhejiang Province on November 7, 2020 .He received his BS