What does it mean to be rich and simple?

Rich and simple styles mostly describe the overall features of a city or country, including its architecture and humanities. While history is constantly precipitating in the years, we will also lose many beautiful things because of the departure of time, such as ancient buildings, the inheritance of humanities and the change of habits. When we lose it, we try to find the memory of the past. We don't want to cut off the memory of history, because it is the beauty we have experienced with our lives, or the beauty left by our parents in memory.