yes, you can enter Hong Kong easily if you have a visa. But if you want to work there, you need to apply for a work visa from India or Nepal directly.

It`s not easy to work or live in Hong Kong. In able to live there or work there you must be a Hong Kong Permanent Resident or if you are holding a Dependant Visa which you can`t easily obtain.

The easiest way is if there would be a Hong Kong company who will hire you, but tell you the truth it`s not easy for Asian people to get in to HK for work since Hong Kong local people are very competent so they will prioritize their own people instead hiring foreigners unless you obtain a Higher Degree of Education that big company`s would want to hire you