Ask for a movie about ninja. This is an old movie. It seems to be made in Hong Kong.

In order to realize the dream of controlling human beings, the careerist Bai Lairen (Li Zixiong) in the reappearance of the God of War sent his ninja leader Hu Dajie after Dr. Ju Chi, and successfully snatched the "red box"-a "human" box invented by Kikuchi that can resist any virus! After Ju Chi's death, Bai Lairen found that only a poor musician named Gao Bi (Wong Tze Wah) had the ability to open the "red box", so he sent Sister Hu to capture Gao Bi alive. On the other hand, our disciple Ninja Iga vowed to fulfill Master's last wish-"kill". On the other hand, Mr. Iga sent his disciple Xiaoling () to protect him. When the three met, they entered the dragon, and Gaby was caught in it, complaining. Finally, Xiaoling took advantage of the opportunity of Hu Dajie's leniency towards Xiang, and fled back to Wuyin Village with deus ex. It turned out that Xiang and Hu Dajie were childhood lovers, and it was difficult for them to get married because of the fighting between sects. Xiang only recovered temporarily at Banana's home. Banana decided to venture into the headquarters of Braun to steal the "red box", but the villagers were massacred and eventually died at the hands of Sister Hu. As a result, Gaby stepped forward and shouted that if he didn't stop killing, he would commit suicide on the spot. Benevolence headquarters accidentally opened a song in The Red Box. It turned out that Ju Chi was attracted by this song that day, so he used it as the key. Xiaoling and Xiang killed Bai Lairen's headquarters. After fierce fighting, they killed Bai Lairen and his henchmen, rescued and recaptured the "red box", and the two women exchanged identities with each other by using the technique of changing faces, which made Sister Hu fall for it-when he realized that what was injured on his hand was Xiang, he stabbed the knife into his body with his last breath ... but at the same time, Xiang's eyes also shed tears. ...