If a person is said to be lucky three times in his life, then according to Ning Hai's words, he used up one time to meet his parents, and used one time to meet Zhao Xu. Fortunately, he still has one time left to meet Zhang Ning.
Ning Hai sighed: If you were a step too late, maybe I would have used up all my luck.
Zhang Ning: What are you afraid of? I have three more times. One time is enough for you. It is also my lifelong luck.