They both mean "yes," so they're related in that way. I'm not sure about the etymology of はい, though, so I can't say whether it is related in an any more significant way to 是的 than just coincidence.
Meaning "yes," then they are. But I've seen the Japanese hai used in a way (as a question, like "what?" or "say that again?") that Cantonese doesn't seem to use, for example:
A-san: You're going to die.
B-san: hai?
A-san: Oh, nothing.
I have heard from a resident in Hong Kong that it is common nowadays for the young people of Hong Kong to add "ne?" to the end of their speech to sound like Japanese.
I thought the use of "Hai" was another example of a japanese word being incorporated into the Cantonese dialect but I guess not.
I have heard from a resident in Hong Kong that it is common nowadays for the young people of Hong Kong to add "ne?" to the end of their speech to sound like Japanese.
I thought the use of "Hai" was another example of a japanese word being incorporated into the Cantonese dialect but I guess not.
I have heard from a resident in Hong Kong that it is common nowadays for the young people of Hong Kong to add "ne?" to the end of their speech to sound like Japanese.