Is it illegal to send text messages to harass others?

Legal analysis: Violating the Law of People's Republic of China (PRC) on Public Security Administration Punishment, and according to the Law of People's Republic of China (PRC) on Public Security Administration Punishment, 5) sending obscene, insulting, threatening or other information for many times, interfering with the normal life of others; Be detained for not more than five days or fined not more than five hundred yuan; If the circumstances are serious, they 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.

Legal basis: Article 42 of the Law of People's Republic of China (PRC) on Public Security Administration Punishment commits one of the following acts, and shall be detained for not more than five days or fined not more 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, falsely accusing and framing others, and attempting 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; (six) voyeurism, sneak shots, eavesdropping, spreading the privacy of others.