In fact, when Long Yueling had appeared, he had already decided that she would not marry. The reason why he did not express her stance or take any action after Long Yueling appeared was because he knew that Little Ling was able to finish him off. As a result, she did not say any words of disobedience in public due to consideration for her royal father and mother's face.
The reason she was so depressed along the way was not because of regret, but because she was worried about the situation within the Cangyue Kingdom. It could be seen that Zhixing's attitude towards this matter was extremely resolute, and there was no room for discussion. He had some understanding of Zhixing's temper, and she was stubborn and willful. After suffering such a great humiliation this time, Zhixing would either drink her hatred and commit suicide, or she would retaliate with all her might.