A testator may freely dispose of his lawful estate in his will, designate a successor to inherit his estate, and his decision to give the estate to one person is lawful. Legacy is the legal private property of the testator. A will is the true will of the testator. When making a will, the testator has a clear mind. If there is no illegal content in the will, the will is valid.
 A will takes effect on the day of the testator's death and is generally executed by the testator's successor. The execution of a will means that after the death of a testator, the transfer of the estate is finally realized by a specific person according to the wishes expressed by the testator in a valid will.
 A testator may, in his will, appoint one or more heirs to execute the will. If no executor is appointed, all heirs may participate in the execution of the will on an equal footing.
 Legal basis:
 Article 143 of the Civil Code of the People's Republic of China
 Civil juristic acts that meet the following conditions are valid:
 （1） The actor has corresponding civil capacity;
 （2） True declaration of intention;
 （3） It does not violate the mandatory provisions of laws and administrative regulations, and does not violate public order and good customs.
 Article 1133 of the Civil Code of the People's Republic of China
 A natural person may make a will to dispose of his personal property in accordance with the provisions of this Law, and may appoint an executor of the will. A natural person may, by making a will, designate one or more of the legal successors to inherit his personal property. A natural person may, by making a will, donate his personal property to the state, a collective or an organization or individual other than the legal heir. A natural person may establish a testamentary trust according to law.
 Article 1143 of the Civil Code of the People's Republic of China
 A will made by a person without or with limited capacity for civil conduct is invalid. A will must express the true will of the testator, and a will made under fraud or coercion shall be invalid. A forged will is void. If a will is tampered with, the tampered contents shall be invalid.