Why do you gain weight so quickly after eating pig-killing vegetables and pig blood? Maybe it's because you eat so well. Pig-killing dishes are rich in flavor, and almost all parts of pigs are made into dishes. Pork bones, head meat, shredded pork, pork belly, pig blood sausage, white meat with sauerkraut and "lanterns hanging (whole set of pigs in water)" may also make you obese, and obese people will get fat if they drink water.