there was a choch on the daily TF and then we see a pull back and now moving to break the previous daily low so we have to enter the 4h time frame to be able to trade the inner structure and in there we already see a BOS now we expect a pull back to mitigate unmitigated OB to touch our OB and we be able to do that well on the 15 min the 15min time frame when we see a pull back and a choch we buy to the 4H OB above and then we sell from there to the daily low as seen on the chart