Valley bottom or valley bottom

The trough period refers to a trough in the development process, which is a metaphor for the most unsmooth and depressed period in the development process of things. The trough will appear in life, love, career, professional sports and so on, such as: temporary trough, emotional trough, life trough, life trough, career trough. As the saying goes, everything goes wrong. No one can be smooth sailing, and everything goes well. Like a sine wave curve, ups and downs are a phenomenon that conforms to the development of nature and human society.

The bottom of the valley means the bottom of the valley, which means the lowest point that has fallen.