I want to open a shop: dry cleaners, shoe repair and shine shops, dumplings (plus barbecue), which is more profitable in the market?

I have done dry cleaning and wash the shoe store. I am a multifunctional washing and dyeing company. In wash the shoe store, the competition in restaurants is fierce, and customers are easily lost. Have you ever seen anyone who eats in a restaurant for a month every day? Shoe washing and dyeing customers are more loyal, and customers are not easy to lose, so dry cleaning companies are not easy to experience ups and downs, and their profits are high. Spend more than a dozen clothes, 1 yuan, and the profit reaches ten times. I run a Nanjing. There are many business items in my shop, such as washing shoes, dyeing, clothing renovation, clothing maintenance, leather polishing and so on. My shop is doing well. I am in a residential area, with a profit of more than 100 thousand a year and little investment. More than 20 thousand dry cleaning machines and a whole set of water washing machines have trained me to learn skills for about ten days free of charge. I've cooked terrible food before.