What is the specific meaning of the couplet "Cheng Gengrui welcomes the Spring Festival, and Chen Zhan Hualianto is the source of students"?

The specific meaning of this couplet is: "Geng" stands for age, "Geng" stands for a new era, and it presents auspicious colors with the arrival of the Spring Festival. "Chen" stands for the Year of the Loong, and the combination of flowers and prosperity in Chen Zhan also means that the arrival of the Year of the Loong will usher in a new atmosphere and a new realm, and will show a new era of prosperity.