NOT KNOWN DETAILS ABOUT BLUE CRYSTAL MATH

Right after agreeing to an ultimatum presented via the cartel, Gus requires Mike and Jesse down with him to Mexico, in which they have got Jesse train the cartel researchers (led by Benicio Fuentes) the way to cook the blue meth. Gus returns from Mexico and his connection with Walt unravels, creating Walt to murder Gus and set an stop to Gus's dist