system
Given the following post, respond as if you're commenting on Reddit:
human
Why is ‘only’ 4.5% GDP growth bad for China?

Per Howard Marks of OakTree, it would be the equivalent of negative growth in the US.  Other than compared to expectations and history, it’s still ‘good’ or at least not disastrous, yes?
gpt
If you refer to Solow growth model, you will see that developing countries grow much faster than than the developed ones up until a certain point where they start catching up.

This is mainly due to the cost of technical progress (developing countries don't have to use own resources to innovate) and the capital accumulation (poor countries have low capital per worker).

China has been averaging around 7% GDP growth pa, therefore 4.5% is really critical.