On July 4, 2017, at 2:26, renowned scientist Chen Xuejun passed away in Xi'an, Shaanxi at the age of 99. Prof. Chen had been engaged in teaching and research at XJTU since 1957, and was one of the pioneers of China's thermal engineering discipline and a leading pioneer and founder of multiphase fluid thermal physics. In the early 1950s, he started the major of boiler engineering in China, China's first institute of Engineering Thermophysics at the universities in China, the first State key Laboratory of Multiphase Flow in power Engineering. As a renowned expert and educator, Prof. Chen made great contributions to the scientific development of power engineering in China.