RSI+突破（简单每日系统） (RSI+Breakout (Simple Daily System))

I thought I am just going to post this here quickly to get some feedback. I was thinking about a breakout/reversal system backed by RSI.

So when RSI is above 50 and the price goes higher than the last 4 days. Buy at the breakout.
Same for the short.
My calculations shows that this bare bons system without any optimization and money management is profitable.

Any thoughts?

Regards
BR