Whenever he feels stressed by his work, Savong tells me, he likes to go out to the school or the SOC and either teach for a while, or to sit and think. Here he’s up on the roof of the main school building, and the sun has just gone down. His phone is keeping him busy. Incidentally I’d never sit there. The tree, it is said, is home to a ghost – a poor woman, a farmer, who used to live here. She is harmless but does not like to be disturbed. But there’s a more practical reason too. An hour earlier I’d stood exactly where Savong is sitting and I was savaged by a number of bull-ants (or fire-ants) that really bite!