Discussing the Rule of Payment Burden Overweight :A Scheme of the Embodiment of Clausula Rebus Sic Stantibus

The contract,which is in the state that the behavior of fulfilling continues for a long period,brings forward a risk of "rebus sic stantibus".When the circumstances for fulfilling contract happen huge changes what cannot be foreseen and the balance of interests of treated payments between parties are broken hardly,the corresponding system must be set up in legislation that is "clausula rebus sic stantibus".But,the characteristic of abstract of "clausula rebus sic stantibus" leads the disadvantage that this principle isn't of the characteristic of operation.So,it must be embodied.Considering this problem,scholars all around the world have brought forward many theories.For restricting the power of judicial modification,"clausula rebus sic stantibus" must be embodied in the lay of rule.So,"rule of payment burden overweight" is the apt legal choice.