We have scraped all Hong Kong government press releases all the way back to 1st June 1997. You can find them here:
At the moment the data is still very raw, but it includes links. Some press are already unavailable, probably (hopefully) due to incompetence rather than malice.
This was inspired by this QZ article showing how the Hong Kong government language is becoming more like that of the CCP: China's authoritarian language is taking over Hong Kong — Quartz
What other analyses can you do with the data?