For many thousands of years, the Chinese were very advanced.
In the last few centuries, the Chinese have been truly and absolutely useless.
I judge the Chinese based on their current performance and not what they did 2000 or more years ago.
The Arabs were great mathematicians, astronomers and builders too. They built the pyramids which are one of the wonders of the world. However, look at Egypt now. It's one of the most fucked up places on earth full or muslim morons. You expect me to admire the Egyptians to today based on what they built 4000 odd years ago???
well, the chinese got these current state is because emperor qi shi wang and a few emperors ordered all education books and fengshui / tcm recorded texts to be burned.
they caused a big loss of recorded texts.
most were loss, barely some were hidden and pass on today.