Rock Solid Yang Xiaowei is Julie's child.

After Yang Xiaowei was born, she has been raised by Julie and has never met her biological father. Later, Julie took the evidence of Zheng Gang and Li Zhitian to coerce Zheng Gang to return her son, or asked Zheng Gang for a divorce, so she was killed by Zheng Gang and them (He Xiuli should be the mastermind, because He Meili at the end of the film was charged with intentional homicide).

In this way, a lot of logic in Rock Solid makes sense. Julie's life is really bitter (although it is self-inflicted). No matter how Zheng Gang got on with Julie, Zheng Gang is not a thing. If so, there will be more stories behind Julie.

In the film, Zheng Gang and Yang Xiaowei met twice. The first time was on the bus. Two people flirting, see Yang Xiaowei look at Zheng Gang's eyes, as well as Zheng Gang's eyes spoil and ambiguity, can basically come to the conclusion that they are not simply elders to young players, probably lovers.

Evaluation of "As Hard as a Rock":

The biggest villain in the film is Li Zhitian. He is ruthless and ruthless, but he is gentle and considerate in front of his daughter, obedient and attentive everywhere. Shortly after the film began, there was a scene in which Li Zhitian used his mobile phone to play the piano and listened to his daughter's piano performance, while threatening an official with a video, forcing him to take out his mobile phone from a hot pot by hand. Coexisting the cruelty and softness of the characters at the same moment not only reflects the complexity of human nature, but also has a very strong emotional impact on the audience.

In Zhang Yimou's creative career, "As Hard as a Rock" is very unique. Its subject matter is sensitive and even sharp, and it also has a sharp side for revealing the dark side of reality. At the same time, it tries to melt the elements of suspense, detection and love into one furnace. The most outstanding artistic achievement of this film is that the villain it portrays is very three-dimensional and real. The film emphasizes the hypocrisy, cruelty and meanness of these characters, and constantly highlights the emotional concerns and warm moments in these "demons".