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Article 17

A notarial will is one made by a testator through a notary agency.

A testator-written will is one made in the testator's own handwriting and signed by him， specifying the date of its making.

A will written on behalf of the testator shall be witnessed by two or more witnesses， of whom one writes the will， dates it and signs it along with the other witness or witnesses and with the testator.

A will made in the form of a sound-recording shall be witnessed by two or more witnesses.

A testator may， in an emergency situation， make a nuncupative will， which shall be witnessed by two or more witnesses. When the emergency situation is over and if the testator is able to make a will in writing or in the form of a sound-recording， the nuncupative will he has made shall be invalidated.

Article 18

None of the following persons shall act as a witness of a will：

（1） persons with no capacity or with limited capacity；

（2） successors and legatees； or

（3） persons whose interests are related to those of the successors and legatees.

Article 19

Reservation of a necessary portion of an estate shall be made in a will for a successor who neither can work nor has a source of income.

Article 20

A testator may revoke or alter a will he previously made.

Where several wills that have been made conflict with one another in content， the last one shall prevail.

A notarial will may not be revoked or altered by a testator-written will， a will written on behalf of the testator， a will in the form of a sound-recording or a nuncupative will.