Tin,
I've never looked at WRB's into a daily chart analysis. Interesting observation, let's see if that provides some support here or not. From a traditional candlestick perspective, I prefer s/r levels with 'candle clusters'. Not sure if I read that term somewhere or not, but basically looking areas where price had respected previously a number of times and
windows. Don't underestimate the power of windows on a daily.
That link to a window explanation is pretty good. That site is not bad either for candlestick analysis. I used to visit it when trading stocks.