The dispute between Na Ying and Cai Guoqing is also a constant struggle. At that time, the young Na Ying was very eager to be with Cai Guoqing, but she seemed to overestimate her charm. Cai Guoqing not only didn't accept her, but also said "Na Ying thinks too much" without euphemism. In a word, Na Ying was left in the cold. More unexpectedly, Cai Guoqing fell in love with Na Ying's sister Na Xin. Na Ying, who was not hated, must be embarrassed to the extreme.

In fact, before this, Cai Guoqing had three relationships, all of which were transnational. Cai Guoqing's first girlfriend is an American named Ace. Cai Guoqing and Ace met in March 1994. They met, knew each other and fell in love with Ace for five years, but finally gave up going to the United States to marry Ace because they valued the honor given by fans and troops more. For this lost first love, Cai Guoqing's evaluation is "like water like a song".