夕阳无限好，只是近黄昏

夕阳无限好，只是近黄昏:

Literally means:

the sunset was beautiful, but it was getting dark soon

Actually means:

夕阳, the sun at dusk, is used figuratively to refer to a person's late years.

This phrase means that the setting sun is beautiful, yet the night is coming and the sun will disappear soon. It figuratively means that beautiful sceneries are transitory or temporary.

It is often used in a pitiful tone to mean soon that something will attenuate or degenerate soon despite its present prosperity or strength.

夕阳，傍晚的太阳，也比喻人的晚年。

夕阳无限好，只是近黄昏，傍晚的太阳虽然很好看，但是这时已经临近黄昏了，马上就要落下去。比喻好景只是短暂的。

常用来说明虽然繁荣、兴旺或强大，但是很快就会衰弱或没落。多含可惜的意味。