墙 (the wall)

i was thinking at a simple strategy, in order to transfer this to my sons;
i'd like a strategy that anyone, without any knowledge of trading world, could benefit frome it.

then i run across all my years if study, success and fail, and i found one startegy that could be very interesting:

i've called it : THE WALL

it's like ou can take a look at the chart, and at a glance, discover if there is a possibility t make trades, or not.