C23 Anthracene

In another elevator, Chu Guojie and Chen Hsinghao could not figure it out, "Isn't that Zhou Qingcao? Wasn't she just a poor mechanical draftsman? "There's only one gas distribution plant left in the house, how did you suddenly become so rich?"

Chen Hsinghao guessed, "Brother Chu, I see that man is very impressive. Did Zhou Qingcao, in order to avoid Brother Chu