Now the spoilers part where I can let myself go.

Let's start that although the story is woven with cause and effect, but I still think it's just to make it feel sad. Sad, mostly because the one who I think broke the family in the end was Lin Jun herself, the biological mother of Banxia. But why the family was broken? I'll lay out what happen back then. During time when Lin Jun gave birth there were also two other women. Qin Xiu, current Banxia's mother and Ms. Ma. Qin Xiu gave birth to a child with cong**ital disease, Ma instigated Qin mother to switch babies with Lin Jun who is considered rich. Her own child did not survive, since she had a plan to receive compensation from her husband's accident, but did not want to leave an oil bottle. She took Qin Xiu daughter's record. Lin and Qiu new records were faked. This record actually helped Banxia's father Gu Jin dig into the matter. Because at the moment 3rd Gu brother was the only one at the hospital he did not notice the switching, although that the child looks a bit different. Yet it led to their family now having a sick child. The child did not live long and died at 1yo before traveling for operation. Because at that time 3rd kid was with his sister he was blamed for it and it lasted for years. Lin Jun had severe depression and eventually asked for divorce. Here I understand and at the same don't understand her. How could you leave a sick child with another child, simply unreasonable. Especially the youngest which was always least sensible. Second thing if it was their first child, but they have three kids and she discarded this fact and left, she wanted to leave this damned place, but Gu Jin did not agree, as well as the 3rd son.
But this case wasn't that simple. Qin knew that her daughter was switched at birth, she came to see her, but because of her the girl died that day. As it happens she was instigated by her husband Shen Sibao who has much deeper involvement in the entire case. His aim was simple, because they conducted blood type tests he didn't want to be discovered. And it revolves around power struggle too. He did not care about the past relationship between him and Gu and Lin family who supported him, but when it came to power struggle he used the opportunity to verbally instigate Lin Jun's weak mental state. Because prior to this she sold her assets to treat her daughter she left the factory in the hands of others, even her patents were left behind. For other it's a gold mine, pharmaceutical company. He benefitted from the incident the most. While Banxia wasn't even living with this family for a long while and when she returned he was simply beaten again and again (cause of her death).
Frustrating part is of course about catching them as criminals, switching babies is not the only case, but it's also not easy to prove (after all it's '95). And Shen Sibao refused to admit anything. It was only when Gu Jin set up a trap that he finally had no choice to give in. Yet, after reading the last chapters I knew that QX who squatted for a while because of her daughter's case and was released after few months. So.. Who will be satisfied with this?At least when it comes to such misery I personally prefer to see some balance. After all the family went through such a turmoil because of their actions, Lin Jun was mental, kids grew up separately, they had a long way to go when it was revealed that Banxia is their daughter. If it wasn't for Banxia's complete trust and love, being a complete sunshine, I have no idea what would happen to this family.
And here is what I could not understand. Quote: Lin Jun arranged for her (Qin Xiu) to work in a boiler room. Excuse me? Mam, are you a saint? Did this really happen, she really did it? Because of them your family faced such a predicament, you went through torture for 5 years, you still had difficulties when you went back, you had to face all those shameless people who did not repent about what they've done, I know there is no positive feeling in you for them. No matter what I'm surprised by this bit of grace.