I think the definition of a superpower is one that inserts overwhelming economical, cultural and military power globally.
Only US qualifies on all three. But most people just seem to consider military power and then China is still just a regional player. Sure, with the clear ambition to grow fast, but still. Taiwan is essential for China to have a free way to the high sea. Culturally it´s still just a regional power, mainly south east asia. Economically i would say China is a superpower though, and this factor is the most important factor to grow military in the future.
The future of it´s economical growth is uncertain though. Population decline, ageing population, bad covid strategies, great and costly pollution problems, high debt problem, especially on real estate making up for almost a third of it´s economy, and trade wars with the west will hamper economical growth considerably in the future.
The only power that can take the hegemony away from the US in the near future is US itself (Trump division, less democracy and self chosen withdrawel from the world scene.)
But there is enough countries in the world with authoritarian leadership (Thailand) that are more comfortable with trading with other authoritarian countries to ensure China´s future trade. No pesky questions of democracy and human rights asked.