This is episode 23 of 52 of Mother-in-Law's Winning Hand(Dubbed). Play it below, then continue straight into the next episode — the whole season is free and needs no account.
The middle of the season, where the conflict escalates.
Qin Ling outsmarts casino boss Zhao and his cronies, Su Laoda and Er Liuzi, who cheated her son-in-law Zhang Daniu out of the medical funds for her daughter Qin Yue. She wins back the money through calculated mahjong play, stalls until the police come, and walks out with Zhang Daniu free.