Legal analysis: it is generally not allowed to alter, and the validity of the revised will needs to be judged by the content of the will. A notarized will shall be handled by the testator through the notary office. A self-made will is written and signed by the testator, indicating the year, month and day.

Legal basis: Article 134 of the Civil Law of People's Republic of China (PRC), a self-written will is written and signed by the testator, indicating the year, month and day.