In terms of engineering, construction is the activity of putting together different elements, using a detailed design and plan, to create a structure for a certain location. ... Architects and engineers design and build the structure with that location in mind.
I think it's the amoeba. They evolved 2.7 billion years ago.
It is mostly concentrated at the northern part of China such as Dongbei and Huabei.
During the brief period of totality, when the sun is completely covered, the beautiful corona — the tenuous outer atmosphere of the sun — is revealed. Totality may last as long as 7 minutes 31 seconds,
Hope this helps :)