Hi, you want buy 工商銀行 (1398)
1)open saving account
2) open stock account (no need money 中銀香港 annual fee if no stock)
3) bank will give password to you through telephone or web or branch to buy stock (you must money on your saving accout first)
* one time deal around $100 (bank fee)+ around $40 (government fee) = $140*
工商銀行 (1398) buy around $5 to $5.2 is safety