Recently, the research team of Prof. Liang Erjun and Dr. Gao Qilong of School of Physics has made progress in the design research and mechanism exploration of negative thermal expansion materials. “Discovering Large Isotropic Negative Thermal Expansion in Framework Compound AgB（CN）4 via the Concept of Average Atomic Volumeof Average Atomic Volume” was published in the well-known “Journal of the American Chemical Society” （IF ＝ 14.695）. ZZU is the first unit, Dr. Gao Qilong the first author, Prof. Liang Erjun and Prof. Chen Jun of School of Mathematics and Physics, University of Science and Technology Beijing are corresponding authors.