Was it illegal to send a message to San Xiao?

Anyone who threatens the personal safety of others by intimidation or other means shall be fined or detained according to the seriousness of the case. It is suggested to handle things calmly and take extreme measures. If you go to a small family to make trouble, you must bear civil and administrative responsibilities and be punished. In the process of marriage, if one party is found to have an extramarital affair, it is necessary to restrain one's emotions, handle it calmly, and take legal and effective ways to safeguard rights, such as actively collecting evidence of the other party's extramarital affair. Article 42 of the People's Republic of China (PRC) Public Security Administration Punishment Law commits one of the following acts, and shall be detained for less than five days or fined less than five hundred yuan. If the circumstances are serious, he shall be detained for not less than five days but not more than ten days, and may also be fined not more than 500 yuan: (1) writing threatening letters or threatening the personal safety of others by other means; (2) publicly insulting others or fabricating facts to slander others; (3) fabricating facts to frame others in an attempt to subject others to criminal investigation or public security administration punishment; (4) Threatening, insulting, beating or retaliating against witnesses and their close relatives; (5) sending obscene, insulting, intimidating or other information for many times to interfere with the normal life of others; (6) Peeping, photographing, eavesdropping or spreading the privacy of others.