The principle is restriction and complement to the principle of contract freedom.

诚信原则仅对合同自由原则起限制和补充作用。

youdao

Therefore, the doctrine of the most significant relationship is to be adopted in our contract legislation concerning conflict of laws with proper restriction of judicial discretion.

所以我国在合同等领域的冲突法立法中可以采用最密切联系原则，但对该原则赋予法官的自由裁量权必须给予适当的限制。

youdao

Is there any restriction on the term of the contract?

有关合同的期限有何限定吗？

youdao

If this were the case then RTW would unequivocally be a restriction of freedom to contract.

FORBES: Does Right-to-Work Increase or Decrease Freedom?

The decision was made to put a restriction on the practice: A doctor who agreed to privately contract with a senior had to avoid filing any Medicare claims for two years.

FORBES: An Important Step Toward Medicare Reform