How to say the idiom front door and back door?

The idiom of the front door and back door is that the front door refuses the tiger and the back door enters the wolf.

Metaphor drove away an enemy and came again. It means that the front door killed the tiger and the back door came in with the wolf. Metaphor disaster followed, the situation is extremely sinister.

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Yuan Zhao Xuehang's Review of History: "Although the Dou family was removed, the temple's civil rights flourished! As the saying goes,' the front door refuses the tiger, and the back door enters the wolf'. This is also called. "

Expanding knowledge: tiger

Tigers are big cats of mammals; The coat is light yellow or brownish yellow and covered with black stripes; Round head, short ears, black behind the ears and a white spot in the center. Strong limbs; The tail is thick and long, with black rings and black tail.

* * * There are nine subspecies, and there are great differences in size and morphology between them. The Northeast Tiger is the largest, the male is 3.7 meters long and weighs 423 kilograms. Sumatran tiger is the smallest surviving subspecies. The male tiger is 2.34m long and weighs136kg.

Tigers are typical mountain animals, which can survive well from tropical rain forests and evergreen broad-leaved forests in the south to deciduous broad-leaved forests and mixed coniferous and broad-leaved forests in the north. Tigers often act alone, and only in the breeding season do males and females live together. There are no fixed nests, and most of them wander in the mountains for food and can swim.

Tigers are more active at dusk, more dormant during the day and rarely come out without being disturbed. Tigers have a wide range of activities, and their daily foraging activities can reach dozens of kilometers in the north; In the south, because there is more food, the movement distance is shorter.

wolf

Wolves are carnivores and canines. * * * There are 1 1 subspecies. Medium-sized, well-proportioned, with slender limbs and toes, it is conducive to fast running. The head and palate are sharp, the face is long, the nose is prominent, the ears are sharp and upright, the sense of smell is sensitive and the hearing is developed. Canine teeth and cracked teeth are well developed. Hair is thick and long. 4-5 toes on the front foot and 4 toes on the back foot; The claws are thick and blunt, and cannot be extended or slightly extended.

The tail is hairy and developed. The wolf's body color is generally yellow-gray, with brown hair base and black hair tip on the back, black-brown, yellow and ivory hair, more black hair on the tail, and ivory color on the abdomen and inside of limbs. In addition, there are pure black, pure white, brown, brown, gray and sand colors.

Habitat in forests, deserts, mountains, grasslands in cold regions, coniferous forests and grasslands. It is Nocturnal Animals, good at running fast and long distances, and likes to live in groups. It often crouches in caves alone or in pairs during the day, but it also comes out in sparsely populated places during the day.

When foraging at night, I often howl loudly in the open forest, which makes the field a mess. Often chasing hunting. Carnivorous, eating herbivores and rodents. It is distributed all over the world except Antarctica and most islands.