Due to the enormity of social issues that had to be addressed, and the limited budgets and human resources of local governments, most cities adopted the slower approach of first controlling and then prohibiting brothel-prostitution. This method was used in Tianjin, Shanghai and Wuhan. Typically it involved a system of governmental administration which controlled brothel activities and discouraged male patrons. The combined effect of such measures was to gradually reduce the number of brothels in each city until the point where a "Beijing-style" closure of the remaining brothels was deemed feasible and reeducation could begin. Reeducation programs were undertaken on the largest scale in Shanghai, where the number of sex workers had grown to 100,000 following the Second Sino-Japanese War.