Literally, a "lion with its mouth open and its mouth closed" can be understood as a person who appears brave and powerful when facing threats, but becomes weak once the threats are lifted or difficulties are encountered. Just like a lion, it is majestic at ordinary times. Once there is no enemy and no food, it will become lazy and listless. This phenomenon often happens in people's daily life. For example, an aggressive boss may become timid in the face of difficulties.
This metaphor can also be interpreted as a person's inconsistency and capriciousness. For example, some people may talk about their principles and values on one occasion, but they violate these principles on another occasion. This kind of performance is like a person who speaks the majesty of a lion with his mouth open, but shows cowardice and obedience like an elephant after his mouth closed.
"A lion with its mouth open and a lion with its mouth closed" can also be understood as people showing different abilities and talents in different situations. Some people may be excellent in one field and show their self-confidence and strength, but they are insignificant in other fields. It's like a lion showing a majestic image when he opens his mouth, but after he closes his mouth, he loses this power and becomes mediocre.
The metaphor of "a lion with its mouth open and a lion with its mouth closed" can be understood from many angles, such as courage and weakness, consistency in words and deeds, and differences in ability. Whether it is the change of attitude in the face of difficulties or the inconsistency of words and deeds, this metaphor reminds us to be true and firm, to be consistent with words and deeds, and to constantly develop our own abilities.