Don't just watch, be enthusiastic, shout loudly to attract guests, or take some promotional measures, such as ten pieces of three strings, you can send one string and so on. What a wonderful thing to solve. In addition, your things must be clean, at least give people a good visual experience, and then you must check the taste, be responsible for the guests, and send you a word: laugh three times at everyone, and the guests can't run away. In short, cynics don't buy it!