In the guise of playing the matchmaker for Wu Song, general Zhang asks his sworn brother’s daughter, Han Yulan, to meet Wu Song. Beforehand he has arranged an ambush outside, wishing to kill Han Yulan and putting the blame on Wu Song. However, the scheme does not succeed. Since the first plan does not pull off, he makes a second. On the fifteenth day of the eighth month, on the mid-autumn festival, he sets the trap again.
張都監借爲武松“做媒”爲名，要他盟兄的姑娘韓玉蘭去見武松，而事先在外面設下埋伏，欲將韓玉蘭殺死，移禍於武松，誰知未能得逞。一計不成又生二計，於八月十五中秋節，又設下圈套。