Interpretation and analysis: according to the original sentence "colorful flags fluttering", we can find that the contradiction in the sentence is "colorful" "Colorful" itself represents complex colors or various patterns, and the red flag is red, so it is contradictory. The "colorful" here can be deleted and changed to: the red flag is flying in the air.
Extended data:
Modification method:
First, the attributive position is improper. For example:
Cotton production in China cannot be self-sufficient for a long time. Cotton produced in China cannot be self-sufficient for a long time.
Second, the adverbial position is improper. For example:
In the socialist construction, we should give full play to the role of intellectuals. (The adverbial "enough" is misplaced in the attributive position and should be placed before "play")