Will it affect our business of selling rice noodles if a woman and her boyfriend cry in the shop?

This generally does not affect them. First of all, they won't cry because your rice noodles are not delicious. Even if passers-by or your guests see it, only a few people will see it. They won't come to your store to eat rice noodles just because couples quarrel in your store. The important thing is that your rice noodles are delicious, and it's okay to quarrel with them. However, if you believe in feng shui superstition, it may have an impact. Isn't crying unlucky? Especially when new stores are opened, believers will feel unlucky, but they think these are all psychological effects. Don't care too much. Do a good job in rice noodles and services, and business will continue to be good.