From the Financial Times:
The icy draft whistling through the entrance hall of Tsinghua University’s 10-megawatt high-temperature reactor building offers a sharp contrast to the technology humming away unseen behind its walls.
But Chinese nuclear researcher Xu Yuanhui shows no sign of letting the chill of a winter day in north-west Beijing cool his enthusiasm as he introduces a visitor to the science that drives the world’s only operational “pebble bed” nuclear reactor.