Rambling Rumblings

What I presumed to be a professor rattling his blackboard making it sound remarkably like an earthquake turned out to be an earthquake sounding just like a professor rattling his board. It was only when we arrived downstairs to see an excitable looking group of admin staff that I realised that today wasn't a particularly bad day for professors to find mistakes in their factors of two but really was one of Beijing's occasional earthquakes. My Japanese friend thought that the earthquake was an earthquake and carried on to lunch. Lunch was OK, the fish balls were a little shaken.