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.

遗嘱人以不同形式立有数份内容相遗嘱，其中有公证遗嘱，以最后所立公证遗嘱；有公证遗嘱，以最后所立遗嘱。

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.

口头遗嘱应当有两个以上见证人在场见证。危急情况解除后，遗嘱人能够用书面或者录音形式立遗嘱，所立口头遗嘱无效。