" Green lanterns as walls, charming as home, dreams as horses, living up to the glory " What did this mean?

This sentence came from the Qing Dynasty's "Dream of the Red Chamber". Using blue lanterns as walls, making the charming scenery into your own home, dreaming of being a thousand-li horse, living up to your youth. This sentence described how Jia Baoyu felt lonely and lost after Lin Daiyu's death, but he still maintained his yearning for a better love and a better life, and made himself better and stronger by pursuing his dreams and working hard. The whole sentence was poetic and philosophical, expressing the importance of firm beliefs and the pursuit of dreams in life.