Slave? I Run This Game.

Xie Wenqiang's girlfriend went missing and nobody could say where she had gone. He was a mathematics student, the strongest in his department, and he went after her. He ended up at the black mine at Langka, working there as a slave, and inside a death game run by the people who held the place. He was thin and did not look dangerous to anyone there. He worked on the people around him with arithmetic and bluff, moving between the criminal groups, betting his own life on setups he had prepared in advance, and playing rich men and practiced cheats across a table. Round by round he held ground in Langka. While he was still tracing what had happened to his girlfriend, the organization behind the mine had already decided he had to be removed.