雷军被骂到不敢说话，这是汽车圈最大悲剧

Group 1 - Lei Jun, the CEO of Xiaomi, has expressed feeling psychologically affected by online abuse, indicating that it has made him cautious in his public communications [5][12] - The automotive industry is experiencing intense competition, leading some companies to resort to unethical practices, such as hiring "black water armies" to attack competitors [8][12] - There are two types of "black water armies": one funded by competing car companies to discredit rivals, and another that generates negative content for profit through artificial intelligence [9][10] Group 2 - The existence of "black water armies" is illegal, and companies should engage in fair competition to reduce their prevalence [12] - Genuine criticism from ordinary users is acceptable, but it should not cross the line into defamation or misinformation [14][16] - Xiaomi has acknowledged its marketing controversies and is willing to make adjustments, which has garnered some support from the public [16][18]