In fact, in the traditional industry, it is also possible to find a more insured investment than the so-called "new economy" but with no profit. Password lock is not a product that is used frequently. It can be said to be a semi-static product, which is more practical in mechanical way. However, the amount of passwords in electronic mode is large, and people feel that they are safer. The password of this patented product is close to the electronic code lock, and the operation is much faster than the traditional mechanical code lock. It is simple and practical. It can be the mainstream of high-grade password locks like the previous two cases.
The poetry code lock of the Qing Dynasty is small and exquisite. It is only five centimeters long, but it has the functions of locks and passwords. It is quite delicate. Although it belongs to the poetry code lock, it is simply a idiom lock. There are four swivels engraved with Chinese characters on the lock. Just like the current password disk, it is placed on the lock and rotated in turn. Only certain combinations can make The lock nose passes, and then rotates again. If you don't know the password, even if you get the key, you can't open the copper lock. It is amazing.
The types of ancient Chinese locks are roughly divided into two categories: reed construction locks and text combination locks. The reed structure lock can be divided into four types: wide lock, Citi lock, torture lock and jewelry lock, mostly horizontal locks for doors, cabinets and boxes. In terms of text combination locks, there are not only poetry code locks, but also idiom password locks, daily password locks, name trade name locks, and so on.