The reason for the name Halong Bay is Bay of "Descending Dragons", it's associated to a fairy tale of Viet people since thousand years ago that the God assigned Mother Dragon and her children descended to the Viet's Land to save people avoid from invaders, that land is Halong bay of today.

The with the golden gun

Hạ Long Bay, is in Vietnam which is in Asia, specifically South East Asia.

It depends on the type of Cruise you want to buy. But if you want to see Vietnam Cruises trips (in Halong Bay, Mekong River) or other Cruises trips in China, Indochina, you can see at Site www.cruisinginasia.com. There are full information for you.

"Halong perme" is not a common phrase in the English language. It could be a misspelling or a combination of words that don't have a clear meaning together. If you provide more context or clarify, I could help you better understand it.