The failure of traditional elements in architecture

Item a is correct. Huabiao is a traditional architectural form in ancient China, which belongs to the huge stone pillars used for decoration in front of large buildings such as ancient palaces and tombs. According to legend, Huabiao is a totem symbol of the tribal times, which was called Huabiao in ancient times, and is rich in the traditional cultural connotation of China.

Mistake B, waterside pavilion refers to a pavilion built by the water for tourists to rest and enjoy the scenery, which is a traditional building in China. The boat is a boat-shaped building built on the water surface or waterside of the garden in imitation of the shape of a boat, for people to play, hold banquets and enjoy the waterscape.

Item c is correct. Shadow wall generally refers to the shadow wall, which is a kind of building in front of ancient temples, palaces, yamen and deep houses, that is, the wall outside the door facing the gate as a barrier.

Item d is correct. The city gate refers to the viewing attic on both sides of the city gate. For example, "Poetry Zheng Feng Ji Zi": "Pick Xi Da Xi, in the city." The "gate" in the book refers to this kind of building.

This question is not multiple choice, so the correct answer is B.