Goddammit, this better not turn into some stupid love triangle arc. Those arcs do nothing but waste everyone's time and take up so many chapters for nothing. I've seen too many other series just ruin themselves by forcing some love triangle plot in them.
Ah shit, here we go again... or maybe not? Cang's got a pretty good feel for Qi's personality, particularly whole 'taking everything at face value', so hopefully she reconsiders this troll move.
This seems like a case of Cang Cang just teasing Qi Lin. The only reason Cang Cang has for "liking" this new girl is because she reminded her of Qi Lin.