There is no defense in criminal cases, so of course you can write your own written materials and give them to the detention center or public security personnel as your own confession. The defense is a document that the defendant (person), counterclaim, appellee and respondent (respondent) reply and refute the contents of the complaint, counterclaim, appeal and retrial application (complaint) within the statutory time limit, and it is one of the most frequently used languages in the complaint. The right of defense is a right given to the parties in the defendant position by law. They have the freedom to deal with the right of defense, and they can reply or be silent. A criminal case is a public prosecution case, and there is no defense.
Legal objectivity:
Paragraph 2 of Article 93 of the Supreme People's Court's Interpretation on Several Issues Concerning Execution When the people's court serves a copy of the incidental civil indictment, it shall determine the time for the defendant or his legal representative to submit the defense according to the trial period of the criminal case. Article 101 of the Criminal Procedure Law: If the victim suffers material losses due to the defendant's criminal behavior, he has the right to file an incidental civil action in the course of criminal proceedings. If the victim dies or loses his capacity for civil conduct, his legal representative and close relatives have the right to file an incidental civil action. If state property or collective property suffers losses, the people's procuratorate may bring an incidental civil action when it brings a public prosecution.