H. Chen¹, Y. H. Chen⁵, J. P. Cheng^1,6, J. Y. Cui¹, W. H. Dai¹, Z. Deng¹, Y. X. Dong¹, C. H. Fang⁷, H. Gong¹, Q. J. Guo⁸, T. Guo¹, X. Y. Guo⁵, L. He⁴, J. R. He⁵, H. X. Huang⁹, T. C. Huang¹⁰, S. Karmakar^3,‡, Y. S. Lan¹, H. B. Li^3,‡, H. Y. Li⁷, J. M. Li¹, J. Li¹, M. C. Li⁵, Q. Y. Li⁷, R. M. J. Li⁷, X. Q. Li¹¹, Y. L. Li¹, B. Liao⁶, F. K. Lin^3,‡, S. T. Lin⁷, J. X. Liu¹, R. Z. Liu¹, S. K. Liu⁷, Y. D. Liu⁶, Y. Liu⁷, Y. Y. Liu⁶, H. Ma¹, Y. C. Mao⁸, A. Mureed⁷, H. Pan⁴, N. C. Qi⁵, J. Ren⁹, X. C. Ruan⁹, M. B. Shen⁵, H. Y. Shi⁷, M. K. Singh^3,12,‡, T. X. Sun⁶, W. L. Sun⁵, C. J. Tang⁷, Y. Tian¹, H. F. Wan¹, G. F. Wang⁶, J. Z. Wang¹, L. Wang⁶, Q. Wang⁷, Q. Wang^1,2, Y. F. Wang¹, Y. X. Wang⁸, H. T. Wong^3,‡, Y. C. Wu¹, H. Y. Xing⁷, K. Z. Xiong⁵, R. Xu¹, Y. Xu¹¹, T. Xue¹, Y. L. Yan⁷, N. Yi¹, C. X. Yu¹¹, H. J. Yu⁴, X. Yu¹, M. Zeng¹, Z. Zeng¹, F. S. Zhang⁶, P. Zhang¹, P. Zhang⁵, Z. Y. Zhang¹, M. G. Zhao¹¹, J. F. Zhou⁵, Z. Y. Zhou⁹, and J. J. Zhu⁷ (CDEX Collaboration)

• ¹Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics, Tsinghua University, Beijing 100084
• ²Department of Physics, Tsinghua University, Beijing 100084
• ³Institute of Physics, Academia Sinica, Taipei 11529
• ⁴NUCTECH Company, Beijing 100084
• ⁵YaLong River Hydropower Development Company, Chengdu 610051
• ⁶School of Physics and Astronomy, Beijing Normal University, Beijing 100875
• ⁷College of Physics, Sichuan University, Chengdu 610065
• ⁸School of Physics, Peking University, Beijing 100871
• ⁹Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413
• ¹⁰Sino-French Institute of Nuclear and Technology, Sun Yat-sen University, Zhuhai 519082
• ¹¹School of Physics, Nankai University, Tianjin 300071
• ¹²Department of Physics, Banaras Hindu University, Varanasi 221005

• ^*Contact author: yanglt@mail.tsinghua.edu.cn
• ^†Contact author: yueq@mail.tsinghua.edu.cn
• ^‡Participating as a member of TEXONO Collaboration.