How can you figure out what all those lines mean?
Looks like a B-763 near gate 24 to me, thanks for posting this.
I believe the hill that CX 86 flew near is the yellow highlighted area abeam SMT on the right side of the 07R departure track, not the red area on the terrain display. But, they should not have been anywhere near any of that terrain on the departure.
Unlike the OCEAN 2A the nighttime departures to OCEAN like the RASSE 1E continue the right departure turn at PORPA to the south to avoid overflying Kowloon and Hong Kong Island.