I think I get it now. PiXXiE's ThaiPop “ไม่ได้ก็ไม่เอา” (Whatever) was translated to MandoPop by 赵露思 (Zhao Lusi) with a slightly different meaning, and entitled as “You Are My Light”. Then PiXXiE covered Zhao's version.
Later, PiXXiE released a direct translation of the original ThaiPop lyrics into CPop, and entitled it as “Whatever”.