Thank you for your reply. I did contact IRCC a few times, MP 3-4 times now (every 3 months), and even the Hong Kong VO (though no reply so far). IRCC webform response and MP both said that it's in security screen but I don't know why it's taking this long. It has been in security since around August 2019. The only reason I can think of for this delay is that the applicant has lived in 4 different countries (for studies purposes) including his country of birth but we provided all of the police clearance certificates etc.That's a long time.....The HK office is working on spousal applications.
May be some issues around your application? Have you contacted IRCC ?