Carl Pei, co-founder of OnePlus, rolled his sleeves up and assembled a OnePlus Nord piece by piece. Many of these tasks are performed by machines at the factory, but the exec demonstrated the assembly process by hand and showed great familiarity with every component in the process.
Watch the video below. Pei points out interesting details, like the copper heat pipe, which wicks heat away from the chipset, and explains the functions of the three ribbon cables that connect the motherboard with the secondary board at the bottom.
He makes it seem easy, but the final design is the product of a few hectic months of development. You can learn more about how the Nord came to be from the four part New Beginnings documentary that follows the OnePlus team as they rush to complete the design.