Nanjing North Study Catering is not Black Pearl. According to the query of relevant public information, Nanjing North Study Catering and Black Pearl are two different brands, there is no direct correlation, Nanjing North Study Catering is a well-known Chinese food brand, mainly engaged in Chinese cuisine and Cantonese cuisine, and with its high quality ingredients, unique culinary skills and quality service is renowned in Nanjing, while the Black Pearl is a kind of famous catering brand, mainly engaged in seafood buffet and grill, and has outlets in many cities. and has branches in several cities.