It's possible that it's a misheard or misspelled phrase, or perhaps a slang expression used in a specific region or group.
If you could provide more context about where you heard this phrase, such as:
* The speaker's dialect: Was it a rural or urban speaker?
* The situation: What was the conversation about?
* The speaker's intention: Was it meant to be serious, funny, or sarcastic?
Then I might be able to offer a better interpretation.
Otherwise, without more information, it's difficult to understand the intended meaning of "moye gonglu".