1.) China is a communist
China is now a dictatorship. China added term limit for its president in 1982, after mao's disastrous rule as a dictator. However, the parliament voted to remove the limit in may - giving xi jing ping 2958 votes and only 2 votes against 3 sustained - giving the president the ability to rule for life. xi jing ping has been adding his own thoughts into the constitution, making him as powerful as mao.
2.) China will overtake US as the most powerful country of the world
That might have been slightly remotely possible in 2008, when US suffered the great recession and the world saw China's economic growth faster than US. However, nowadays, with dollar still the hegemony, US has bounced back from the recession to have healthy jobs rate, gdp growth rate, investments rate, etc. Meantime, China's economy has stalled, its gdp lauded as fake, it suffered stock market crash, capital outflow, huge shadow debt, middle income trap, yuan depreciation, and foreign direct investments decline. With dictatorship came extreme censorship, concentration camps, social credit score, and public monitoring. Its per capita gdp has stalled at around $8000/year, nowhere near US's $56000/year.
3.) Chinese citizens have high savings rate
"what do we actually find when we look for the mythical Chinese saver in the real Chinese economy, rather than in the macroeconomic assumptions? Bank balances offset against enormous, rapidly rising, bad debts, a property bubble out of all contact with reality, a closed capital account to prevent money draining overseas while it still can, and an unregulated shadow banking sector where vast pools of notional value endlessly gyrate on air currents of uncertain origin"
https://www.forbes.com/sites/douglasbulloch/2017/04/26/the-m...
4.) China's peaceful rise
South China Sea, island building, arming the islands with military weapons, threatened invasion of Taiwan, harsh crackdown of democratic demonstrators in Hong Kong, concentration camps in XinJiang, controlling buddhism in Tibet, interference with Australian and New Zealand politics, strong handed approach to other countries airlines in changing the official names of Taiwan, one belt one road as a way to finance dictatorships around the world and also bankrupt countries and steal their vital ports and infrastructures.