We don't know what they found in that 2-bar test (8:30 and...

We don't know what they found in that 2-bar test (8:30 and 8:40), but what they found they will act on in the following bars. The assumption is that if the 3rd candle is green, then the first test candle found insufficient participation by sellers as they pushed it down. Now that they know the committment of the bears, they test the bulls by pushing it up. Then they compare the commitment. The banks are looking for the path of least resistance, and in this case it was up.

Normally they'd only do a 1-bar test, so that makes me think the move up may not be all that strong. In fact the 3rd bar (8:50 on the 10m chart) was used to re-test the bears, meaning they were still unsure. But it passed that test as well. If it hadn't, then I guess we'd do it all over again until they found a clear difference. You sometimes see that in the first 15m after open.

Target 554.5.