In the video, a person is seen assembling a Lego structure. The structure is made up of various colored blocks, including red, blue, yellow, and white. The person is using their hands to carefully place each block into position, creating a complex and intricate design. The blocks are of different shapes and sizes, and the person seems to be following a specific pattern or design. The video captures the process of building the structure from start to finish, showcasing the person's skill and attention to detail.