Two options
Learn some chinese
actually not so hard - you can find the terms you want
here
or use Google Translate
or other translation app
Or wing it ...
also not so hard - even if they don't speak English there's a good chance the pros will already know the professional terms they need, in multiple languages
and if not, use body language
OK make it three options
Go bar hopping in Wanchai and pick up a girl who does speak English. Philippinas, Indo, and many others already do
