How to interpret the finale of Black Storm?

Behind Ma Shuai's imprisonment and trial. When I first read this story, I didn't really pay attention to it. Later, after Ma Shuai's death, when we look back at this story, we can see that there is a perpetual calendar behind Ma Shuai. Moreover, the humidity is clearly marked below, which is on the high side and tends to increase during the interrogation. Which means Ma Shuai didn't die of a heart problem.

The slogan in the proprietress's shop. Li Chengyang and Dajiang usually go to the wonton restaurant to eat, which is also the wonton restaurant that Li Chengyang and his master Lin Han used to go to. The slogan says "Pack with heart". This is a far-reaching "trap". Hu Yun took his blood pressure. In the play, in almost all the scenes related to director Hu, he is taking his blood pressure. This detail actually implies that he has done too many bad things, so his heart is bad and he has been in fear.

Xu Xiaoshan did not commit suicide. When Lao Ning came to Xu Xiaoshan's house, in fact, the audience could already know what Xu Xiaoshan's final outcome was. At that time, I just called Xu Xiaoshan, and Xu Xiaoshan lied to Xu that he wouldn't go to dinner if he had something to do. In fact, Lao Ning had already stood behind Xu Xiaoshan and threatened him.