英语长句,求高手分析结构

问题描述:

英语长句,求高手分析结构
Set in the early 20th century,after the ching dynasty shattered and war-lords fought over the empire's pieces,Let Bullets Fly tells the brutally comic tale of a bandit facing off with the local strongman for control of a provincial town.
in……和after……在句中成分,如果after引导的是一个分词结构的状语的话,那么它的逻辑主语不是应该和主句主语一致吗?但主句主语是Let bullets fly,

set in 和after是句子的两个状语从句,如果after引导的是一个分词结构的状语的话,那么它的逻辑主语是应该和主句主语一致,比如: after finishing homework, Jim always plays the computer games.这时发出finish这个...