The world
largest mass migration every year is taking place currently just before the
Chinese New Year. When ten of million people are moving across country to
return home, the efficiency of transport becomes worse. Is there a way to
improve the transporting efficiency? To deal with this problem, we face two
constraints: time and costs. To reduce the pressure of traffic, we can increase
people's available time to return home, or reduce people's willingness to
return home. By doing so, we can either increase the holiday wage levels or
give migrant workers longer holiday. However, it is also important to ensure
that workers can only choose one option from the two choices; otherwise, the
problem will not be solved.
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