in the late 1930s, the famous peking opera troupe "sheng family ban" and the gangster jiang youcai formed a grudge. in the conflict, the father and mentor of sheng zhonghao, the top martial artist, died tragically. before his death, his father forced sheng zhonghao to make a poisonous oath that he could not take revenge. sheng ren took his junior brother wen lixuan and junior sister zhen yuhuan to escape to tianjin. how many days on the way