"Elegance" is the Book of Songs. Refers to the traditional essence of pre-Qin poetry. "Alone" means alone. "Lift" means boosting and reviving.
"Students" are students. ""This is a shoe. " "Full" means full. A door is a door.
The first narrative single-handedly revived and promoted the tradition of The Book of Songs. The second sentence describes that many students admire him and study with him (shoes are piled up outside the door).