Re: BYD Qin Concept
Well, I'm quite sure it's a clone of the Corolla. BYD added a profile on the rear doors, but besides that the doors and window lines and probably the structure within it, wheelbase and dimensions (width, axle track) too, are exactly the same in my opinion, even though the Corolla is quite (ahum) a generic car indeed. Just follow the lines of the rear door and how they flow around the wheel arches.
Well, BYD copied the previous generation US/CN Honda Accord already: the BYD F6 (and the upgraded version G6).
F0 = Toyota Aygo.
F3/G3/L3 = previous Toyota Corolla (Altis).
F6/G6 = previous US/CN Honda Accord.
e6 = previous JP/CN Honda Odyssey (heavily reworked).
M6 = current Toyota Estima.
S6 = ? Although it looks like a knockoff of the previous Lexus RX, the panels and window lines are not identical and I believe the wheelbase doesn't show a similarity with both the Lexus RX and the Toyota RAV4.
S8 = ? Although it looks like a copy (front design) of the Mercedes CL or SL, the panels are obviously not the same.
At least the interior of the Qin is original, it's more Ford or Hyundai than Toyota.