The "six degrees of separation" proposed by Milgram, also known as the small world theory, once said that there will be no more than five people between you and any stranger. In other words, you can get to know any stranger through at most five people.
"It's strange. This city is quite big, but I can always meet you in various places." Wu Yitong sighed.
Nie Qin said dotingly: "You know what the hell, two people meeting each other may not always be God's will across the sea of people. There are also man-made surprises."
Concept: Love grows wildly and does not need to be specifically defined. It just allows each other to heal and grow.