What idioms begin with a lock?

Overlapping locks: overlapping walls and overlapping keys. Refers to the inner court of the deep palace, which is well protected.

Bit locking: describe a trap.

One cow and nine locks: metaphor can't be freed.

Cloud lock: describes the gloomy weather and gloomy atmosphere.

Smokey smoker: refers to being covered by clouds.

Cangue with lock: cangue: an instrument of torture worn around the neck; Lock: an instrument of torture connected by an iron ring. Refers to criminals wearing fetters and other instruments of torture.

Locking: refers to criminals wearing fetters and other instruments of torture. Same as "locked flail".

Name REINS Lock: REINS: REINS. Metaphor fame and fortune bind people like reins and chains.

Lock the reins: metaphor fame and fortune bind people like reins and chains.

Name of REINS Lock: REINS: REINS. Lock: chain. Fame and fortune bind people like reins and chains.

Gold cangue jade lock: cangue: a torture device around the neck; Lock: an instrument of torture connected by an iron ring. This is a metaphor. Children are both the wealth and the burden of parents.

Frown keyhole: lock: tight knit. I frowned and narrowed my eyes. Describe a very distressed look.

Double-wall lock: duplicate walls and overlapping keys. Refers to the inner court of the deep palace, which is well protected.

North gate key: originally refers to the lock and key on the north gate. Later, it refers to military sites in the north.

Chain reaction: chain: a link is connected together like a chain. Metaphor related things change accordingly.

Close the door: close the door: close the door; Lock: lock. Close the door to the outside world and keep away from foreign countries.