Even if China's demographic issues are as big as dumbass clickbait YT vids and reddit comments make it out to be that would still put China in the demographic position of SK a couple of decades ago. S. Korea quintupled industrial production 1992-2010 and their productivity rose x6 while it's factory workforce dropped 25%. It's all about education, tech, and productivity. More important than the aggregate Chinese population is the technically proficient,college educated, Chinese population. That has grown 20-fold, or by 2,000%, in the past 40 years and will continue to grow due to the hundreds of millions of untapped rural population despite the decline in population.

So point is, economy is still growing. The plan has always been to create self-sustaining growth in exports to the Global South with BRI infrastructure + productivity leap at home. Both of those aspects show great success. Exports and imports to the GS are expanding and the entire SEA is brought in the sphere of Chinese digital economy. The "greater China" economy includes another billion people in SE and Central Asia.China is getting 2x to 8x productivity leaps with AI/5G apps in industry/mining/logistics.

And all that is assuming China cant and will not tackle demographic issues in any other manners