【裁判要旨】同一诉讼中涉及两个以上的法律关系的,应当依当事人诉争的法律关系的性质确定案由;均为诉争法律关系的,则按诉争的两个以上法律关系确定并列的两个案由,一并审查。对商品房买卖合同或民间借贷法律关系的性质界定,不应受制于当事人之间签订合同的外观和名称,而应由当事人的真实意思和合同的实质内容来决定。实践中可根据合同约定的标的物特征、权利义务是否对等、履行方式是否有违常理等方面综合考虑。 【Reasons for Judgment】 Cases involving more than two legal relationships in the same lawsuit shall determine the cause of action according to the nature of the legal relationship between the parties involved in the litigation. When they all dispute the legal relationship, they shall be determined in accordance with the two or more legal relations of the litigation Two cases to review together. The definition of the legal nature of the contract of sale of commercial housing or the legal relationship of private lending shall not be subject to the appearance and name of the contract signed between the parties but shall be determined by the true meaning of the parties and the substance of the contract. Practice can be based on contractual characteristics of the subject matter, whether the rights and obligations of equality, performance is contrary to common sense and so on.