C618 Yu Yin's Madness

"The purpose of this is to train your strength. Stop talking nonsense and quickly pinch it!" Lin Feng said.

The little hand began to exert force, but Yu Yin was wondering if he should reveal his strength. If he revealed it, would the result be good or bad?

An eight or nine-year-old child, especially a girl, fifty kilograms of strength was unrealistic