Take 4 list values, hongda, lvxiao, hongxiao, lvda.
There are two lines, a green line MA20, b red line MA60.
When the line is in the interval between a>b golden cross to aWhen the line is at aWhen a[-1]>lvda[-1] and b[-1]>hongda[-1]:
print(with a reminder)
when a[-1]
