Actually, it's a tone sandhi version of the climax of Emil Wakin Chau's A Difficult Classic. You can hear it if you listen carefully.

PS: Original soundtrack:

Felix Wong Yat Wa version of Eight Dragons:

Also known as the 97th version of Eight Dragons, it premiered on TVB Emerald Channel in Hong Kong on July 28th, 1997, filmed by tvbi, directed by Li Tiansheng, and directed by Felix Wong Yat Wa, Benny Chan, Fan Shaohuang, Carman Lee, Liu Jinling, Liu Yucui, Zhang Guoqiang.

Tian Long Ba Bu:

It is the martial arts masterpiece of the famous writer Jin Yong. Written in 1963, it took four years to create (some of the contents were written by Ni Kuang), and there were three editions before and after, and it was revised by six drafts in the third edition in 25, and the ending changed greatly. Based on the Song Zhezong era, the novel examines and describes life and society from a philosophical perspective through the Wulin grievances and ethnic conflicts among the kingdoms of Song, Liao, Dali, Xixia and Tubo, and shows a magnificent picture of life. Its bizarre twists and turns, numerous characters involved, extensive historical background, huge martial arts battles and rich imagination are among the best in the "golden book".