Once I went to a restaurant for dinner and saw a figure that looked like a friend, I went up and patted him and casually asked, "Are you there?" As a result, it wasn't him at first glance ... I was embarrassed at that time and quickly apologized with a smile. He said indifferently, "If you are alone, let's put together a table." Later, we became friends, too. Although it was a little abrupt, we talked.

I have read a book called "There are no strangers in the world". In fact, there are really no strangers in the world, and friendly contact will not be accepted by anyone. Maybe you can find a bosom friend or close friend by casual contact.