"When you meet the person you want to meet among millions of people, in the endless wilderness of time for millions of years, you just happen to catch up with him, neither a step too early nor a step too late. There is nothing else to say, but to ask softly, are you here too?" - Zhang Ailing. Apart from Gu Manwuxie's romance, what Yu Beibei loved most in adolescence was Zhang Ailing's love story. However, at that time, Yu Beibei never imagined that her youth would go round and round and be unforgettable after encountering olive green.