What is a Cover Door What does a door cover look like?

It refers to someone's (fatal or irrevisable) weakness.

In ancient times, the kung fu of people who practiced martial arts always had a place on their bodies that they could not practice, and this place was called the cover door. If the cover door is discovered, poke it with a heavy hand, and the martial arts will be invalid.

The one who covers the door also covers, the one who opens the door, the so-called one who covers the door, can not be covered. The cover door is where the defects of the kung fu practiced are located.

It's to cover the door, afraid of the wind and the sun.

Same floor. Addendum: Now borrowed to refer to someone's (fatal or incurable) weakness.

Cover door is a Chinese dialect word meaning "door frame". It may be pronounced and written differently in different dialects. The term cover door is usually used to describe the frame structure of house doors and windows, and is one of the necessary components in the installation, decoration and transformation of doors and windows.

Cover doors play a vital role in the installation process of doors and windows, on the basis of ensuring that doors and windows are installed firmly, durably and beautifully, there are also important functions such as enhancing safety, isolating noise, and adjusting the size of doors and windows.

In addition to windows and doors, cover doors also play an important role in traditional construction projects. For example, in some ancient Chinese architecture, the cover door is often used as one of the important structures of the door opening and roof cornice, which fully reflects the excellent craftsmanship and cultural connotation of ancient Chinese architecture. In modern architecture, cover doors have also been widely used, with the progress of science and technology and the improvement of technology, the types and functions of cover doors are becoming more and more diversified.

From the perspective of physical properties, cover doors are usually made of wood, metal or plastic, which has the advantages of high strength, durability, fire and waterproof. In addition, the appearance and design of the cover door is also one of the important factors in the decoration of doors and windows, and the color, shape, material and other elements of the cover door need to take into account the overall decoration effect and aesthetics.

In short, the cover door is an indispensable component in the doors, windows and building decoration, with load-bearing, beautiful, increased safety and other important roles, driven by modern building materials and design technology, the type and function of the cover door has also been continuously innovated and developed. <>

In fact, it refers to a relatively simple gatehouse, but it is more concise in structure and shape. The door cover is usually just made of green bricks on the door wall to create different shapes, and the eaves of the imitation wood structure are built at the top, and the brick carvings are inlaid as orange decorations. The eaves are often placed on the door cover, and there are tiles under the eaves, which can shelter the wind and rain and protect the components under the eaves and the wall above the door head.

Cover doors. People who practice the golden bell jar, iron cloth shirt, and the thirteen Taibao horizontal exercises will always have one or two places on their bodies that they can't practice, and this is the cover door.

In addition, network firewall vulnerabilities are also referred to as cover doors.

In life, the term "cover door" is often used to refer to key weaknesses that are difficult for oneself or others to overcome.

Hope it helps.