If the provisions of the inheritance law of our country, if the will is the expression of the true intention of the decedent, and the will is signed by the decedent, and the content of the will complies with the law, the printed will is legally effective. Inheritance Law of the People's Republic of China
 Article 17 A notarial will shall be made by the testator through a notary organ.
 A self written will shall be written and signed by the testator, and shall be marked with the following year, month and day.
 A will written on behalf of the testator shall be witnessed by two or more witnesses, one of whom shall write on behalf of the testator, noting the next year, month and day, and shall be signed by the proxy, other witnesses and the testator.
 A will made in the form of a sound recording shall be witnessed by two or more witnesses.
 A testator may make an oral will in a critical situation. An oral will shall be witnessed by two or more witnesses. If a testator is able to make a will in writing or by recording after the emergency situation is relieved, his oral will shall be invalid.