a doorsill or threshold; the horizontal beam or stone at the bottom of a doorframe

The horizontal beam or trellis of a window frame

doorsill; threshold

clouds around the windows and mist on the threshold; describes a tall building that reaches into the clouds

a cage or enclosure for wild animals or beasts

(idiom) to speak the truth with unwavering courage, especially when advising a leader; based on the story of the Han official Zhu Yun who broke a palace railing while resisting arrest after criticizing the emperor's tutor.

the stage in a conflict where a nation decides to use nuclear weapons; also the technical level a country must reach to develop nuclear capabilities

(idiom) a flower in a cage and a crane in a basket; a person who has lost their freedom

a cart with a cage on it, used in ancient times to transport prisoners or wild animals

a cage for animals or livestock

bird in a basket or monkey in a cage; a metaphor for someone who has lost their freedom

an old hand; a person who is very experienced or expert in a particular field

to wear out the doorstep; to visit someone so often or in such large numbers that the entrance is worn down

the railings of a balcony or long corridor in a traditional hall

railing; fence; banisters

(idiom) carved pillars and green jade windowsills; describes a luxurious or heavily decorated architectural environment