Flesh and Bone (Chinese: 骨肉帮) is a gang specializing in prostitution and human trafficking. It is only available when the game's language is set to Chinese.
This gang has three known members
Sheng Hsu (Chinese: 徐盛) is a driver by trade but commutes via public transportation. In his investigation, victim Paula Laukkanen describes him as an "Asian man wearing glasses".
Hsu does not need to be interrogated to start the investigation into the gang. He can alternatively be arrested for a reward of $10000.
Once a trafficked prostitute herself, Lin Tseng (Chinese: 曾琳) proved herself loyal to the leaders of the gang which eventually led to her managing the very brothel she once was forced to work for.
Her investigation involves a specific case of renting out the entire brothel to a rich customer. Her arrest will lead to the final investigation of the gang or alternatively, a $15000 reward.
Jian Kao (Chinese: 高健) is a major kingpin of the prostitution and human trafficking market in Freeburg with strong connections to the Chinese mafia. He has a daughter who attends the Freeburg Elementary School.
Kao's investigation revolves around a shipment of prostitutes. His arrest will disband the gang and reward you $30000.