I remember that it was not called laser at that time, it was called death ray. When I searched it out, it should be the one below.
Movie Name: "Death Light on Coral Island" Released: 1980 Region: Mainland China Color: Color Type: Thriller/Science Fiction
[Edit this paragraph] Cast and crew
Director: Zhang Hongmei Screenwriter: Tong Enzheng Shen Ji Starring: Qiao Qilingzhihao Qiao Zhenma Junqin Qiu Yuefeng
[Edit this paragraph] Summary of the story
In a certain country, W City, Professor Zhao Qian, a patriotic Chinese scientist, successfully trial-produced a high-efficiency atomic battery. He rejected the attempts of major consortiums to purchase the atomic battery patent rights with large sums of money and decided to bring all the samples and data back to the motherland. That night, Professor Zhao was assassinated. In order to fulfill the professor's last wish, Professor Zhao's future son-in-law, young scientist Chen Tianhong, fled in a plane with battery samples. On the way, the plane was shot down by a strange aerial weapon, and Tianhong fell into the sea. He struggled to swim to a nearby island, and a shark swam towards him. At this critical moment, a flash of fire flashed, the shark died immediately, and Tianhong swam to the island. This is a mysterious island where only an old scientist, Professor Zhao's friend Dr. Matthew, and his mute servant Aman live. There is a complex and magical experimental center on the island, where Dr. Matthew passed through 10 The laser was successfully trial-produced in 2005. It was Dr. Matthew who used the laser to rescue Tianhong in the laboratory just now. When Tianhong learned that Dr. Matthew had not solved the power problem of the laser, he handed over the high-efficiency atomic battery to Dr. Matthew. When they realized that Venus Company was trying to combine the research results of Professor Zhao and Dr. Matthew to create a new type of weapon that threatened human peace, they were determined to stop this evil act. Venus Company was afraid that the conspiracy would be exposed, so it sent people to the island to obtain information and to blow up the island to eliminate evidence of crime. After a fierce fight, the warship escaped with the information and the island was about to be bombed. At this critical moment, Tianhong cooperated with the dying Dr. Matthew to use a newly successfully trial-produced laser and a high-efficiency atomic battery to sink the warship. The island exploded. . Although the scientists' new inventions failed to survive, they defended human peace with their blood and lives.