At present, the new landmarks in many cities are either higher than height, or more luxurious, or blindly pursuing avant-garde and grotesque, forming a sharp contrast with the surrounding historical context. Because architecture, especially landmark buildings, involves centuries-old plans and millennium plans, once built , It is difficult to change, so in recent years there have been many recognized failures, which have become extremely dissonant notes in the city, criticized by the world, and left a laughingstock for future generations. What does the author mean? ['The new landmark of the city should be in harmony with the surrounding historical context.', 'Landmark architecture involves a hundred-year plan and a millennium plan.', 'The pursuit of height, luxury, avant-garde or grotesque has created many city landmarks.', "Be careful in building urban landmarks. Don't be criticized by the world. Don't leave a laughingstock for future generations."]