What is the function of Lin Chong's five-character poem inscribed on the hotel wall? Please analyze it briefly.

What is important is to express Lin Chong's lofty sentiments of "success" after being caught up with Liangshan in 2008.

"Life experience is sad, fame and fortune turn to fame", which links Lin Chong's yesterday and today and paves the way for text interpretation.

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Lin Chong is writing poems on his way to Liangshan.

Fighting righteousness is Lin Chong, the most simple and honest.

The rivers and lakes are famous, and the country of Gyeonggi is a hero.

Life experience is sad, and the fame class turns to tents.

If he succeeded when he was young, Wei Zhen would come to Shandong.

(Excerpted from Water Margin)