1.Private international law is adjusted foreign civil law relations. The so-called foreign-related civil legal relations refers to the principal, object and the rights and obligations according to the legal facts occurred in at least one or more factors associated with foreign civil legal relationships.

    2.First, with one or more foreign-related factors: (1) one or both of the principal foreign natural persons, legal persons or stateless persons, or foreign countries. (2) legal relationship with the object of foreign-related factors. (3) have a civil relationship, or change the fact that eradication occurred in a foreign country.

    Secondly, the existence of legal conflicts. Conflict of laws known as "inconsistent with the law" means two or more different laws at the same time are available for adjustment of the legal relationships. ª¥

    Thirdly, here's civil legal relations in a broad sense. It includes not only the civil legal relationships, such as property rights, creditor's rights, intellectual property rights, marriage and family relations and inheritance relations, but also for business relations, such as the Company Law, Law of Bills, maritime law, insurance law and insolvency law relations, but also in labor relations.

    3.International practice is in international exchanges evolving unwritten laws and regulations, it can only after international recognition binding. In private international law, this practice has two forms: one is not required to comply with the parties choice but to the practice whereby the mandatory practice; The other is only after the parties choose only their binding practice whereby the arbitrary practices. Private international law is the majority of the international practice of such arbitrary practices.