It is from bottom to top, followed by the first hole (right little finger) and the second hole. . . Go to the seventh hole, and then there is another hole on the back of the flute, that is the eighth hole (left thumb).
In which all black circles indicate total pressure, i.e. no leakage.
The half black circle indicates that you have pressed half a hole (not necessarily just half a hole, you will understand later).
An empty circle means don't press.
In fact, in many cases, it doesn't matter whether the seventh hole pressure or not (for example, 1, 2, 3, 4, etc. ), just to keep the balance of holding the flute, so some fingers press the seventh hole and some press the eighth hole, which is a personal habit and does not affect.
As for the tune you said. . I haven't heard of it. . The correct blowing method is to grasp the rhythm and the breath will be good.