Majority of HK people unable or unwilling to speak English.
HK spoken English among the worst in the world.
After 15 years of English classes (kindergarten 3; primary 6; secondary 6)
the majority of students can barely put a simple sentence together
Fix the problem where it starts - at kindergarten, where
children are taught incorrect sounds, phrases, sentences etc. In every
kindergarten, let there be Chinese teachers for all subjects
except English, and let there be a teacher (either local or foreign)
whose English is "native speaker" standard, for teaching English.
This English teacher would take the children for 30 minutes a day, for
the three years of kindergarten, at the end of which time the children
would be speaking correct English, after which what happens in primary
and secondary school would be almost irrelevant.