He Yan is an associate researcher at Institute of Nuclear and New Energy Technology of Tsinghua University, Beijing 100084, China (e-mail: email@example.com). He received his Bachelor degree in 2004 and PHD degree in 2009 in Dept. of Precision Instruments of Tsinghua University. For years, he has been working on reactor equipment design and validation of High Temperature Reactor Pebble-bed Modules (HTR-PM). His main research interests include nuclear reactor equipment and optical fiber sensing.