Why do romantic heroes in the Tang Dynasty wear clogs and Japanese clothes?

Originally, this was a normal custom in China, but it was very strange after being copied by the Japanese.

Legend of Tang Legends and Heroes is jointly produced by Suzhou Fu Na Culture and Technology Co., Ltd., Kunshan Fu Na Culture Communication Co., Ltd., Suzhou Fu Na Film and Television Art School, Nanjing Fu Na Film and Television Culture Communication Co., Ltd., Nanjing Fu Na Film and Television Investment Management Co., Ltd. and CCTV TV drama management center. A costume suspense series jointly produced by CCTV and Suzhou Culture and Technology Co., Ltd., directed by Fan and starring Fang Lishen, Li Man, Shen Jianhong and Li Meng. It tells the story of the rebellion plot in the Tang Dynasty, which was finally crushed by a team that eliminated violence and was loyal to the Guards in order to live and work in peace and contentment for the people all over the world. The play premiered on CCTV 8 on 20 13, 10 and 2 1.