Puppies love to travel, 30% withdrawal conditions

Punch in for 30 days and arrive in "Beijing". By inquiring about the strategy that puppies love to travel, we know that as long as the proportion of puppies who love to travel is below 1.6%, they can quit, and the proportion of 30% and 1.20% not only needs to reach the number of cities, but also needs to reach the condition of "Beijing" for 30 days.