Which episode is Wu Lei’s Awakening?

Awakening Wu Lei, the Black Five’s relative, is the fifth episode. A little girl was bullied by a French drunkard in the French Concession. When Heiwu saw someone bullying the Chinese, he stepped forward and knocked the group of people to the ground with a fist and kick. But when the patrol police in the concession saw someone fighting, they knocked Heiwu unconscious and took him away. The unconscious Heiwu was brought to Wu Lei. After seeing his own joke, Wu Lei, the patrol officer in the French Concession, couldn't help but feel proud and prepared to punish Hei Wu and take care of him. Wu Lei used electrical appliances imported from France to torture Heiwu. Heiwu said he wanted to confess, but took the opportunity to kiss Wu Lei. Wu Lei was almost mad at the false accusation.