Was Crocodile stronger at Marineford? Or was he holding back in Alabasta?

 During the Alabasta arc, Crocodile displayed a level of power that was initially considered overwhelming by the Straw Hat Pirates. He possessed the Logia-type Devil Fruit called the Suna Suna no Mi (Sand-Sand Fruit), which granted him the ability to control and transform into sand. He had a reputation as a Shichibukai and controlled the desert kingdom of Alabasta from the shadows. His strength was showcased through his battles with Luffy and others. At Marineford, Crocodile was present as part of the war that took place at Marine Headquarters. While he did participate in the battle, he didn't display the same level of dominance as some other powerful characters present. This has led fans to speculate that he might not have been as strong as initially portrayed in Alabasta. It's important to note that power scaling and character abilities can be subject to interpretation and development by the author. Oda often keeps details deliberately open-ended to keep the story intriguing.

What were the architecture and buildings like in Ancient China?

 Ancient Chinese architecture was characterized by a number of distinct features and styles that developed over the course of its long history. Some of the most notable features of ancient Chinese architecture include:

Symmetry: Ancient Chinese buildings were often designed with a strong sense of symmetry, with an emphasis on balance and proportion.

Use of wood: Wood was a common building material in ancient China, and many buildings were constructed using a combination of wood and brick or stone.

Eaves: The roofs of ancient Chinese buildings often featured large, overhanging eaves that served to protect the walls and windows from the elements.

Ornamentation: Ancient Chinese buildings were often adorned with intricate patterns and decorations, such as carved wooden beams and stone reliefs.

Use of natural materials: Ancient Chinese architecture made use of a variety of natural materials, including wood, stone, and earth, and often incorporated elements of the surrounding landscape into the design of buildings.

Some of the most famous examples of ancient Chinese architecture include the Great Wall of China, the Forbidden City in Beijing, and the Temple of Heaven in Beijing.