A 20-year-old guy raped and killed an 80-year-old woman after drinking, what kind of world is this?

Tao, an 80-year-old woman of the Hani ethnic group in Ninger County of Pu'er City, had been in good health, but was recently found dead by the villagers... Yesterday, Li, a 20-year-old man, was brought to the scene by the police, and only then did the villagers learn that the old woman had been raped and murdered by Li. According to the police, by seniority, Li should have called Tao "grandma".