I mean is，simply say，people who be called ”fulao” is people who speak minnan language，they live in guangdong province，but from minnan area（most of them are zhangzhou people）fujian province.different to chaozhou people，they migrate later，around qing dynasty，Living on the west side of Chaozhou。before they come，people live there who culture is kejia or chaozhou。And chaozhou culture is belong to minnan culture
So, put it straight. The "Fulao" culture doesn't exist back in 1337, because those people who were called "Fulao" haven't migerated their way to the location to the place from their home back in Minnan (闽南). To clarify, Minnan just means southern Fujian province. In addition to that, you think Chaozhou culture should be removed from the game, since Chaozhou people are also just Minnan people living in Chaozhou city, Guangdong province.
The whole story, therefore, would be that:
300yrs later in Qing's period of time, a group of people from Zhangzhou city, Fujian province, decided to move.
They moved to nerighbouring province Guangdong (more known as Canton).
Guangdong people (known more as Cantonese) saw them and ask - "where're you come from?"
Poeple from Fujian told them - "Hodie men, we are from Fujian."
Cantonese then went back their home and wrote - "Bunch of Fulao ("Fujian people" in Cantonese dialec) came to our door today. Gush! We already got bunch of their brothers living in Chaozhou. I liked that place! Maybe I should call someone to bar them with provincial immirgration services......"
So the Fulao emerged, 300 yrs later than Yuan dynasty time.
