1, for the whole fish (about 1 catty): after the water boils, the pot is steamed for 8 to 10 minutes is a more common recommendation. Steaming for 6 to 7 minutes and then turning off the heat and using the residual heat to "false steam" for 3 to 4 minutes is also a common practice.
2, for the cut pieces of grass carp: control within 10 minutes, the specific time can be adjusted according to the thickness of the fish pieces.