Explain why communist party opposed old-fashioned gowns and mandarin jackets and other clothing?

In China, old-fashioned gowns and mandarin jacket represent the four olds, which considered a very traditional way of thinking in China (give nobles the power and let the peasants obey(.
The communist party was intended to revolutionized this prinicple and tried to distribute the wealth to the lower middle class.

Those are all examples of edible fish. so your answer is numbers 1 and 3.