legal ground
According to Article 134 of the Civil Law of People's Republic of China (PRC), a self-written will is written by the testator, signed and marked with the year, month and day. Article 135 A will written by proxy shall be witnessed by two or more witnesses, one of whom shall write it by proxy, and shall be signed by the testator, agent and other witnesses, indicating the year, month and day. Article 136 A printed will shall be witnessed by two or more witnesses. The testator and the witness shall sign on each page of the will and indicate the year, month and day. Article 137 If a will is made in the form of audio and video recording, two or more witnesses shall be present to witness it. The testator and the witness shall record their names or portraits, as well as the year, month and day by audio and video recording. Article 138 A testator may make an oral will in an emergency. An oral will shall be witnessed by two or more witnesses. After the emergency is eliminated, if the testator can make a will in writing or in the form of audio and video recording, the oral will made is invalid. Article 143 A will made by a person without or with limited capacity for civil conduct is invalid. A will must express the true meaning of the testator, and a will made by fraud or coercion is invalid. Forged wills are invalid. If the will is tampered with, the tampered contents are invalid.