There are huge advances in China in terms of material technology and production standards. There is also an incredible amount of state support and capital power. They are able to make astronomical acquisitions in every area where they are lacking.
In terms of export products, the common denominator of countries showing interest in Chinese systems is countries that have been excluded from the western system or that cannot afford to buy these systems. So China offers extremely cheap or or long term financing systems to these countries. It does not matter whether they are effective or not, whether they compete with their western counterparts or not, the countries that buy these systems somehow fill that gap, even if it is minimal.
However, it is a fact that cheapness is no longer a parameter that defines the development of the Chinese defense industry. They are making a breakthrough towards global industrial leadership in many areas.
Turkiye's rival is not China. The level China wants to catch up with is the technological power of the US. This does not mean that Turkiye cannot compete with China. It is only natural that we can produce much better systems than China in strategically prioritized areas. A similar example is Israel. Israel probably has the world's most successful system engineering in some of its strategically prioritized systems.
As far as China is concerned, I think the main problem is that China is not a country that is actively fighting somewhere with its army. On the other hand, countries like Israel and TR, which require a more demanding resource management than China, are actively at war, and they shape their systems with feedback directly from the battlefield. The solutions they produce are tailored systems. China, on the other hand, is more likely to follow the blueprints of countries such as Russia, France and the USA.