Excuse me, what idiom is better than this, Rui Ju Hua Tang?

It is difficult to evaluate the quality of idioms, because each idiom has its specific purpose and context. In the example you provided, "Ruiju Huatang" is a common idiom, which means that auspicious atmosphere gathers together to describe prosperity or prosperity.

If you need an idiom similar to "Ruiju Huatang", you can consider the following:

Happiness is like the East China Sea, and its life span is longer than that of Nanshan: it means that happiness is as broad as the East China Sea and its life span is longer than that of Nanshan, which describes people's happiness and life span are very good.

Lucky star is shining high: it means lucky star is shining high, and it describes good luck or auspicious situation.

Cheerful: it means full of festive atmosphere and describes the lively scene of festivals or festive occasions.

Four seasons' peace: refers to the four seasons' peace and smoothness, and describes the state of peace and contentment.

Xue Rui heralds a bumper harvest year: it means that snow in winter heralds a bumper harvest year, and describes that snow in winter heralds a good omen for next year's bumper harvest.