Battle at the Forbidden City

Ouchi secret agent Long Longjiu (Nick Cheung) is asked by the "Sword Master" Ye Gucheng (Andy Lau) to engage the "Sword God" Ximen Chuixue (Ekin Cheng) on behalf of the "Sword God" Ximen Chuixue (Ekin Cheng) on September 15th at the top of the Forbidden City in the Hall of Supreme Harmony to determine who is the best swordsman in the world. The "Sword God" and "Sword Master" became famous in the sword competition, which immediately shocked the martial arts world. Everyone in the world used it as gambling capital, and gambling became popular for a while. In order to avoid causing trouble, the imperial court sent Long Longjiu and his imperial sister Jin Yanzi (Zhao Wei) to jointly prevent the sword duel. Jin Yanzi has always admired Ye Gucheng, but forgot his purpose in his actions. And Long Longjiu discovered that a mysterious force was planning a big conspiracy, waiting for the opportunity on September 15th.