Can I bring cakes, salted-egg fish skin, nuts, biscuits, bread and medicine into China?

Can I bring the following items into China? Thanks!
(1) cakes
(2) a pack of salted-egg fish skin (snack like potato chips in a package)
(3) nuts
(4) biscuits
(5) bread
(6) medicine or piils for runny nose, cough, sore throat, stomachache