Hong Kong on Thursday saw the first people imprisoned under a new security law, which will have been in effect for six months on Monday. Chu Kai-pong was jailed for one year and two months after earlier pleading guilty to one count of “doing with a seditious intention an act or acts that had a seditious intention,” under the Safeguarding National Security Ordinance, known colloquially as Article 23. Less than two hours later, Chung Man-kit was sentenced to 10 months in prison after entering a guilty plea for three counts of the same charge. On Friday, Au Kin-wai was handed a one-year, two-mont…