1) What mean Global Firm? Is IB and MC? Or Fortune 500? Almost every UST graduate who came from Mainland and stayed in HK got satisfied job in terms of pay, good name and even life style this year. You can got detail info about placement stat from UST BJ and SH office.
2) UST has world-class Finance & Accounting. Also has pretty good connection with MC community and it is very helpful to assist you land in this industry.
3) If you target HK after graduation,UST is definitely better that 2nd tier Bschools in States. For mainland students in US top10, they have more opportunities for sure.