I requestetd this a few days ago and uploaded a drawing:
https://skyscraperpage.com/cities/?buildingID=135771
I see now that the construction date is missing. It's
finished in
1980
Right now it says construction began that year, which I don't know if it's true or not.
Source is this database. One has to do a search for the building:
https://bmis1.buildingmgt.gov.hk/bd_...ing_search.jsf