Man stabbed in China's Guangdong province after intervening in dispute... Suspect is a co-worker in his 40s - Chinese report

At a factory in Foshan, Guangdong Province, China, a 40-year-old machine repairman died after being stabbed by a knife held by a man working at the same factory.
According to a statement released by the local police, around 5pm (local time) on the 21st, an incident occurred in the city's Zenjo Ward.
Police received a report that an injury had occurred at a stockinette factory. As a result of the investigation, on the same day, the suspect, Mr. So (male, 40), who was working at the same factory, was visited by Mr. Hayashi, the wife of Mr. So's brother.
It turned out that a 43-year-old woman had come to visit. The two had been having trouble over domestic issues, and they reportedly got into an argument that day as well.
Mr. Gan (male, 44), a mechanical repairman, intervened, but Mr. So, who was extremely excited,
I took out the knife I had. When Mr. Gan tried to stop him, he was stabbed with a knife, and an ambulance rushed to the scene, but Mr. Gan was pronounced dead at the scene.
Police currently have Mr. Zeng in criminal custody and are conducting an investigation.