They are best friends. She left them. Three years later, she came back and brought someone with her to join them. Then quit again. Qin Meng'er said: "It has been three years and we are living a good life. Why did you come back? You have a new best friend over there. What do you want us to do? It was you who caused her. It is all because of you that she is like this. You are the culprit." Sun Xiaoting cried alone on the side. Qin Meng'er said sadly: "What do you think of us? You can come when you want and leave when you want. At first, you were the one who wanted to join. Now, you are also the one who wants to quit." Sun Xiaoting said, "I'm sorry, we have considered you." Accept it." Qin Meng'er said, "You know now that you have to consider our feelings. What were you thinking when you wanted to join us?" Sun Xiaoting said as she stepped back, "I'm sorry." She ran out as soon as she finished speaking.