Li Tian crouched against the chain-link fence of the underground fight club, her knuckles still spattered with her opponent's blood. The muscular white man had crashed to the ground in front of her. She heard her own ragged breathing mingle with the roars from the crowd, while a dull ache surged in waves through her right ribs, where her opponent had struck her with an elbow moments ago. The referee raised my hand, and the crowd's roars surged like a tide. Someone tossed cash at my feet. The colorful bills, smeared with mud, looked just like the days of my first half of life. I ignored the money thrown from the stands and stared only at my scraped palms. She had been trying to get justice for a coworker who hadn't been paid when that so-called...