After half a year of marriage, Tang Tiantian never said "I love you". Mo Siheng said every day, but she never responded. She made hundreds of phone calls until he lost contact with him for three days when he was in danger on a business trip. When he came back safely, she threw herself into his arms and cried, "I love you." He hugged her tightly and said, "I know. I've been waiting for your words for half a year."