Technically and scientifically...Chinese People are defined by their DNA and DISTINCTIVE facial features such as their rather uncommon striking and beautiful eyelids and eyes, the way the Persians and Aryans similarly are for their distinctive blue eyes....
The word Chinese actually came from Western and Persian traders whom dealt with the Chin dynasty 5000+yrs ago.....and thus the word Chinese stuck with such distinctive People of different physical traits but nevertheless, trade was far more critical, and was used as an identification of a different Race, but STILL are Humans, whom would laugh and bleed the same as any other fellow Human SHARING OUR PLANET.....
Chin Dynasty was founded by the 1st Emperor of China - Shi Huangdi.... who united the huge landmass and population under his control thru his wise and decisive moves to UPLIFT lives, such as unified language, weight and measures, walls to protect his citizens, infrastructure, economy, and more......
He had a difficult life as a child and thru his life experiences, managed to become an Emperor thru horrific Imperial Court's trials and intrigues.
But sadly, as he grew old and realized his mortality as time is limited, he became a Tyrant and hated for much of what he THOUGHT was necessary to ensure his reforms for the uplifting of the majority population...and worse, due to such opposition from others and evident intrigues to kill him, he listened and favored a mere court eunuch Zao Gao whom only knew how to please his masters, elevated the moron - a nincompoop, fecal matter in his brain but with animal cunning, to prime minister status and eventually led to the downfall of the Qin Dynasty, as the devil Zao Gao served Emperor Shi Huangdi's descendants as well.......
Eventually, thru Liu Bang, a more down to earth Human, managed to overthrow the tyrannical and despotic Rule of Might Qin Dynasty, to begin the Han Dynasty, with painful lessons learnt from tyranny, to instead uplift and elevate the lives of the Chinese People, and the Han Dynasty lasted for an amazing 400 yrs, a golden age for the Chinese People thru life elevating uplifting in many societal efforts such as in science, economy, trade, jobs, justice, peace, progress and more......
Over time, power corrupts, and absolute power corrupts all, a truism proven time and time again. The Han Dynasty fell, but every Chinese Human will remember the golden age of Han Civilization, and thus the strong identity of Humans with distinctive DNA and facial features, whom will always identify themselves as Chinese, with respect due to the 1st Emperor of China whom unified their distinctive race, and more as Han for its golden age.....