The talk about his ex.

Outside, at the car, grandpa Zhang and his grandsons were facing the prosecutor general who for some reason appeared to be hesitant to leave. All farewells had been said, there was nothing left to say. 

The prosecutor general lifted one leg to enter the car and then he lowered it back on the ground. Every time he did that, everyone's heads would move up comically and then down.

He turned to grandpa Zhang and said, "About the gold fish..." Then he stopped and shook his head. "Never mind." 

He turned around to leave, lifted a leg and they reacted in the same way and yet again, he lowered his leg and turned around. 

"It's just that the fish are living in a hostile environment." he said in a hopeless voice that held some despair.