BBD is a formula for statistical data of large orders, and now many softwares have indicators. The company source code of Great Wisdom L2 is BBD: ("ddedata @ bigordescal" (1,2)-"ddedata @ bigordescal" (2,2)) * sum (amount, 0)/ 10000.

Drawtextabs (0,0,' Super Win BBD (unit: ten thousand)'); Large single inflow-large single outflow =BBD value