This is the 186th most frequent Chinese word.
金
"Gold; metal; money."
In this context, '金' directly refers to the metallic element gold, a precious metal.
这块金子很纯净。
This piece of gold is very pure.
Here, '金' metaphorically conveys high value or excellence, highlighting an outstanding or brilliant characteristic.
他的发言打动了大家，这是此次会议的“金点子”。
His speech moved everyone; it was the 'golden idea' of this meeting.
Here, '金' (gold) is used to describe the color that resembles the appearance of gold, indicating a shining or bright attribute.