Guan Yu, in folk legends and the novel "Romance of the Three Kingdoms," has always been a symbol of loyalty, bravery, and celibacy. He is also the only person in Chinese history who was worshipped as a deity by chivalrous people. In Hong Kong and other Chinese regions, even the police kept his statue in the police station for blessing. Strangely, the underworld and the martial arts world also regarded Guan Yu as their patron saint. If there were conflicts between the police and the criminals, I would not know who Guan Yu would bless. Speaking of justice, normally he should bless those who are loyal and righteous, no matter they are black or white. That means whoever belongs to, they must be loyal and righteous in daily life, otherwise, Guan Yu would not bless them when trouble comes. In this way, it could be a good way to ensure the integrity of civil servants and make the underworld more moral.