The allusions of the popular idiom are as follows:

"Wangzhu" is an idiom, usually used to describe excellent literary works or famous sayings, which are praised and appreciated by the majority of people. This idiom comes from a story in ancient China.

According to "Zuo Zhuan: The Twenty-Three Years of Duke Xi", during the Spring and Autumn Period, Chong'er, the prince of Jin State, was forced to go into exile and passed through many places. Once, he went to a small country called "Cao Country" and was entertained by the king of the country. At the banquet, the king of Cao State entertained Chong'er with delicacies such as "wenzhi".

"脍" refers to finely chopped meat, and "Zhi" refers to roasted meat. It is a very delicious food, but at that time, due to technical limitations and problems with food preservation, this delicacy was not common and therefore very precious.

Chong'er liked this dish very much. He ate it with relish and praised it highly. The king of Cao State who was present was very happy after hearing this and thought that Chong'er was a man of taste. So he jokingly said: "If you can become a king one day, you will definitely be full of praise for this delicious food."

Chong'er was not angry after hearing this, but smiled. He replied: "Okay, I will remember this sentence."

A few years later, Chong'er finally became the king of Jin, that is, Duke Wen of Jin. He returned to the State of Cao for a visit and tasted the "Wang Zhi" again. People have spread the word about Chong'er's love and praise for "Wangzhi", and this story has been widely circulated.

Thus, the idiom "popular" was born, which is used to describe those beautiful things that are widely praised and appreciated by people, including food, literature, art, etc.

The meaning of this idiom is that beautiful things should be appreciated, praised and praised by people. This also reminds us that we should be good at discovering and appreciating beautiful things in life, and share them with more people.