Does the martial arts novel written by Jinlong count as traditional culture?

I don't think so. First of all, traditional culture is a kind of national culture that reflects national characteristics and features, and it is the overall representation of various ideological cultures and ideological forms in national history. Every nation in the world has its own traditional culture. China's traditional culture takes Confucianism as its core, as well as Taoism, Buddhism and other cultural forms, including: ancient prose, poetry, ci, qu, fu, national music, national drama, quyi, traditional Chinese painting, calligraphy, couplets, riddles, shots, wine orders, two-part allegorical sayings and so on.

These are the products of historical accumulation, and the martial arts novels of Jin Yong and Gu Long belong to modern products. I don't think it's good for you to choose the theme of opera.