why did Steinbeck write so little action before the scorpion scene?

Steinbeck wanted to set the tone and mood of Kino's family prior to the bite and the discovery of the pearl. Although poor, Kino's family was content and happy. They lived close with the rhythms of nature as well as the peace of having friend and relatives. It is only after the scorpion bite that desperation takes hold of Kino. His peaceful equilibrium is forever altered.