Your friend used a false title certificate as a secured mortgage loan, which violated the second paragraph of Article 224 of the Criminal Law and constituted the crime of contract fraud. If the other party sues, your friend should be investigated for criminal responsibility. Article 224 of the Criminal Law: the crime of contract fraud; The crime of organizing and leading pyramid selling activities has one of the following circumstances. For the purpose of illegal possession, in the process of signing and performing a contract, if the amount is relatively large, he shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention and shall also or only be fined; If the amount is huge or there are other serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years and shall also be fined; If the amount is especially huge or there are other especially serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than 10 years or life imprisonment, and shall also be fined or confiscated: (1) Fictitious units or signing contracts under the name of others; (2) Mortgaging with forged, altered or invalid bills or other false property rights certificates; (three) to perform a small contract or part of the contract first, to deceive the other party to continue to sign and perform the contract, and to have no actual performance ability; (4) After receiving the payment for goods, advance payment or secured property paid by the other party; (5) defrauding the other party's property by other means. In the name of business activities such as selling goods and providing services, organizations and leaders require participants to obtain membership by paying fees or purchasing goods and services, and form a hierarchy in a certain order, directly or indirectly based on the number of people who have developed, luring or coercing participants to continue to develop pyramid schemes attended by others, defrauding property and disrupting economic and social order, shall be sentenced to fixed-term imprisonment of not more than five years or criminal detention and fined; If the circumstances are serious, he shall be sentenced to fixed-term imprisonment of not less than five years and fined.

Legal objectivity:

Article 395 of the Civil Code of People's Republic of China (PRC) The following properties that the debtor or a third party has the right to dispose of may be mortgaged: (1) Buildings and other land attachments; (2) The right to use construction land; (seven) other property not prohibited by laws and administrative regulations. The mortgagor may mortgage the property listed in the preceding paragraph together. Article 399 of the Civil Code of People's Republic of China (PRC): (1) Land ownership; (two) the right to use collectively owned land such as homestead, private plots and private hills, except those that can be mortgaged according to law; (3) Educational facilities, medical and health facilities and other public welfare facilities of non-profit legal persons established for the purpose of public welfare, such as schools, kindergartens and medical institutions; (4) Property whose ownership and use right are unknown or controversial; (5) Property that has been sealed up, detained or supervised according to law; (6) Other properties that may not be mortgaged according to laws and administrative regulations.