Where to pay HK visa fees in Nepal and How?

Hi, this is what I found from the website of HK immigration department, which I think helps:
"if the application is submitted to the Hong Kong Immigration Department direct by post, the fees in the form of a cashier order or a bank draft should be sent together with the application. The cashier order or bank draft should be issued by a bank which has a connected bank in the HKSAR and made payable to "The Government of the Hong Kong Special Administrative Region". No cash should be sent with the application.
If the application is submitted to the Hong Kong Immigration Department through a local sponsor, payment of fees should be made upon collection of the visa/entry permit either in cash, by EPS or by cheque. The cheque should be crossed, made payable to "The Government of the Hong Kong Special Administrative Region", properly dated and signed."