What do you mean by bragging?

First boasting about the curative effect and achievements, and then being exposed and found worthless, the cowhide is broken.

For example, in 2003, the Three Gorges Dam was able to prevent a once-in-a-century flood, in 2007, and in 2008, the dam was able to prevent a once-in-a-century flood, with a ratio of 20 10, and "the dam's flood storage capacity is limited, so all hopes cannot be pinned on the dam". Now people begin to question the water storage capacity of the Three Gorges Project.