Specific information about Auschwitz concentration camp? And related historical background?

The three gas chambers in Auschwitz concentration camp can kill 6, people a day, and all of them are "industrialized" and streamlined. As soon as the Jews entered, the iron gate was engraved with "Labor makes people happy". Women and children go directly into the gas chamber, and so do men who are sick. There is a greater chance of survival if you have a skill. Go into the gas chamber, say to take a shower, hang clothes wherever you want, and people take them back for disinfection and send them to Germans for use. When the poisonous gas was released for about 2 minutes, 2, people hung up, and the gatekeepers in the concentration camps, usually the scum of the Jews, hooked them out one by one. Then pull out the gold teeth, peel off the tattooed ones, make gloves, lampshades, carpets and purses, then melt your fat in one workshop, make soap for the Germans to burn the rest in the next workshop, and then scatter your ashes in the fields, and never waste it.