How many years after the Burmese took control of the Shan States did the situation turn to China's favor?
return the  Burmese took control of the   Shan States ;return the  situation did turn to China 's favor ;return year of #1 ;return year of #2 ;return difference of #4 and  #3
['select', 'select', 'project', 'project', 'arithmetic']