Li Qiang solved that physics problem with the help of Liu Ming. 在刘明的帮助下,李强解出了那道物理题。
Therefore, the police carries on the investigation to these outside areas labor to subpoena immediately, the confirmation murderer is Li Qiang. 为此,民警迅即对这些外地民工进行调查传讯,确认杀人凶手就是李强。