First of all, I'm from Guangzhou, and I've been to Shanghai, Hangzhou, Shenzhen, Beijing and Zhuhai.
In fact, every big city has many opportunities, but living in a big city is also bound to bear the pressure of the city. I think the pressure can be ranked this way: Shanghai & gt; Shenzhen & gt; Beijing & gt; Guangzhou & gt; Hangzhou & gt; Zhuhai, of course, the development of opportunities and locks to withstand the pressure is directly proportional to the pressure is greater, the greater the pressure, the natural development of its opportunities is also greater.
As for the catering industry you mentioned, I looked at it, know that you should be Cantonese, naturally understand that Guangzhou's food should be the most famous of these cities, but now most of the Guangzhou are not locals, the locals accounted for about 20%, in Guangzhou there is no one unified cuisine, if you want to do Cantonese cuisine, it is difficult to beat some traditional eateries, if opened in Shenzhen or Zhuhai, there are also all foreigners. If you open in Shenzhen or Zhuhai, there are all migrant workers there, who are not used to eating Cantonese food, as for Shanghai and Beijing, it is even more difficult to do, so I do not recommend.
I work in Tianhe, Guangzhou, this side of the Hunan cuisine restaurants to time is very hot, especially at noon, are overwhelmed. Guangzhou has several densely populated heap, do some of the low-grade eateries can solve their meals can also bring you a lot of income.
As for the rent in Guangzhou is not too expensive, some low-level places on about four or five hundred dollars on a room, but there are also many high-level apartments, high no see the top, that is to say, the price range is very wide, a penny a penny, it depends on which you choose.
I'll say this much, I hope you useful la.