People's hearts are too complicated.

In the past, it was very simple and positive. First, I cared about living, then I had enough to eat and drink, and then I considered my spiritual needs, just to live better.

However, now that we eat, drink and live well, the requirements of our inner world are getting higher and higher. Some people always rush to the moral bottom line to seek excitement, and the things they pay attention to are getting more and more strange. Now they don't have the pure and positive heart as before.

It is not the complexity of society, but more importantly, the complexity of people's hearts and the horror of human nature.