Guarda Streamingcommunity. Jiang Nanshan and Li Ai fell in love at first sight on a bus, yet gradually discovered their timelines flowed in opposite directions—Nanshan's final day was Li Ai's very first day. During this brief, one-month romance, the two created a love story destined to be remembered for a lifetime, and found clarity in their life directions amidst the turmoil of balancing ideals with reality.