Watpa Vimuttayalaya : Meditation Hall 

Lots of practitioners practicing in the same place leads to difficulties in concentration. Temporarily dim-lighted space could help them see less of disturbance. However, if they WATCH CANDLELIGHT IN DIM SPACE, THEY WILL NOT SEE ANY DISTURBANCE EXCEPT THE LIGHT ALONG THE PRACTICE. Moreover, the movement of candlelight makes practitioners more concentrated.