How do you evaluate the characters in "Shanghai Beach"?

Let’s talk about Ding Li. This character does not have much culture, is rough, ambitious, does not understand etiquette, and knows what he is doing. I have to say that he and Xu Wenqiang are indeed very loyal buddies, but no matter what, I can't figure out why the director asked Ding Li to kill Xu Wenqiang in the end? Ding Li beat Xu Wenqiang to death when Xu Wenqiang drew his gun and wanted to kill Feng Jingyao. But why? Doesn't Ding Li know that between them, it's either you die or I live? Maybe after Ding Li talked to Xu Wenqiang, he really no longer regarded Xu Wenqiang as a brother. At this time, Feng Jingyao was his father-in-law, and it was reasonable for him to draw his gun. He made a choice between his brothers and fame and fortune. This writing may be more in line with the social background, but the Hong Kong version of "Shanghai Beach" is different from this version in that it highlights the unchanging loyalty of life and death in dealing with the relationship between Ding Li and Xu Wenqiang. In the entire play, the character Ding Li is different from Xu Wenqiang in terms of personality, pursuit, and behavior. The most eye-catching thing is his infatuation with Feng Chengcheng. As much as Feng Chengcheng loved Xu Wenqiang, Ding Li loved Feng Chengcheng, and he had always been her protector. When Xu Wenqiang was here, he worked hard to fulfill them. This feeling was not just as simple as her being a sister-in-law, but blessings and hope that you would be happy from the bottom of his heart. He deeply understood what Feng Chengcheng wanted. His love for Feng Chengcheng is humble. There is a scene like this: Ding Li said to Cheng Cheng very excitedly: On the day of our wedding, what should I wear that looks good? Feng Chengcheng said absently: Whatever. Ding Li suddenly felt a little disappointed, feeling like he was talking to the air, but immediately said: Cheng Cheng, do you think I'm stupid? Do you like me to be stupid like this? If you like it, I will be stupid like this. I think Feng Chengcheng must have felt the difference between love and non-love. Thinking about how she was busy decorating the new house and ordering dresses when she and Xu Wenqiang were preparing to get married, she was completely different from her inattentive behavior at this time. So the people you face are different, and your attitudes towards dealing with them are also different. In fact, Ding Li knew it well. Before getting married, he still asked the question in his heart: Cheng Cheng, why did you marry me? It turns out that everyone who loves you needs to be loved. Ding Li asked Feng Chengcheng this way because he hoped that he could have a place in Feng Chengcheng's heart. While he loves, he also needs to be loved. No one wants the person he loves not to love him. Feng Chengcheng and Ding Li, two completely different people, come together. Their lives may be calm or dull. But for Ding Li, Feng Chengcheng only needs to be a good wife. After all, a marriage that is not painful is not a hooliganism.