Question

why we cannot call the China democracy country?

Answer 1

We cannot call the China democracy country because the president can rule as long he want therefore we cannot call the China a democracy. It is like a dictatorship government XI Jinping can rule as long he wants to rule and no one can dare to take his presidency, also there is only one party in China (the communist party of China)
and the people of China also supports communist party.

Answer 2

Because china is a country ruling by the communist party