Mu Chun

Mu Chun is nicknamed “Little Unrestrained" as his elder brother Mu Hong is called "The Unrestrained". The Mus, who are wealthy and skilled in martial arts, have huge influence and are feared in Jieyang Town (揭陽鎮; believed to be in present-day Jiujiang, Jiangxi) near the Xunyang River, where they live.

When Song Jiang is in on the way to exile in Jiangzhou (江州; present-day Jiujiang, Jiangxi), a reduced sentence for killing his mistress Yan Poxi, he passes by Jieyang Town with his two escorts. He comes upon Xue Yong, who is performing martial stunts on the roadside for tips from onlookers. When Xue first came to Jieyang, he did not go to pay respects to the Mu brothers, who are feared by the local people. To punish him for the snub, the brothers have ordered the townspeople not to patronise him. Unaware of that order, Song Jiang generously tips Xue impressed by his performance and out of pity that no one awards him. Angry that Song made his family lose face, Mu Chun, who is among the onlookers, rushes forth wanting to beat him up. However, he is floored by Xue Yong.

Humiliated, Mu Chun orders every inn and house in the town not to accommodate Song Jiang and his two escorts for the night. The one person who offers them free lodgings is Mus' father, who is kindly and unaware of what have happened. While at the Mus' manor, Song Jiang overhears Mu Chun looking for his brother Mu Hong to help in tracking him down. He also learns that Xue Yong is captured and has been beaten up.

Song Jiang and the two escorts sneak away under the cover of night from the manor. But the brothers have learnt about their presence at their house and comes after them. In desperation the three board the boat of the pirate boatman Zhang Heng. Midway across the Xunyang River, Zhang wants to kill and rob them. Fortunately, Li Jun, whom Song Jiang has recently befriended at Jieyang Ridge, passes by and saves Song in the nick of time. Zhang is shocked to learn that the exile is Song Jiang, who is famous for his chivalry. The Mu brothers, who have been waiting at the bank, are also surprised when told of his identity. The group from here on treats Song as an honoured guest until he leaves for Jiangzhou.