An outstanding talent actually left in such a way. Sad and indignant. What happened in the hours before he was hacked? ？

Why is he still on the street at 2:35.a.m. and not at home? And who asked him out to talk? What did he talk about?

An honest and kind person, why was he hacked to death by this poison?

When he consciously called for help, the driver who happened to pass by did cold-bloodedly refuse to save him. Caused him to miss the golden treatment time, resulting in death. Americans have to reflect on the U.S environment. San Francisco's life security and quality of citizens are disappointing.