If I am not wrong, Your point is that 5000 points Chinese stock index is overated, or the stock market can't reflect the value of company.
As a whole, China stock market value is not high, not overrated, I not deny that, some companies stock value are overrated, but the blue chip stocks not, this heavy fall was caused by too fast rising, you don't know Chinese stock market, it is not mature, too much specultion, it is not mature, all these was used by shorting seller.
Too fast rising and falling, both not good for Chinese economy, but too fast rising will be worse for Chinese economy, the heavy speculation will hurt Chinese substantial economy, more money rush into stock market, people don't want work, help earn easy money, it is better that falling now than in higher index.
Chinese stock market is not mature, it is always not in line with the company real value, low stock price always can't influence the company management, good company not mean high stock price in China, too much speculation.
in your last comment, you said the fall is because Chinese economy meet diffcult, talking about the fall respectively, it doesn't matter with Chinese economy, Chinese economy maybe have problem: but structual transformation of the economy, this is stage, if India can reach Chinese economy level, you will meet it, if not, you will like South America countries.
Now, Chinese economy growth rate slow, but still not slow comparing with most of other countries, even with developing countries, we are still up, not collapse, Chinese economy meet difficulty, but not incurable disease, China can develop faster if we want, but that is not sustainable, if we don't slow it, don't do structural transformation of the economy, then oneday, it will become incurable disease.
Here, I will be off topic a moment, talking about India economy in my opinion:
I concern on India economy, after Modi being PM, find many indian see him as savior, In fact, it is irrational.
The problems and difficulty india met is much more and serious than China, your second industry is too weak, poor infrastructure, all these is not real difficulty, but you social structure and bureaucrat, land policy, all these will influence you developing industry and infrastructure developing heavily, can't solve these, I don't think your growth is sustainable, your economy is more fragile than China, I have no question on Modi's knowledge and ability on economy, but whether he can change your government, and dare to touch even ruin some real obstacle for developing economy sustainably.
Some Indian here talking about your young population, it is too naive and superficial, all these just can say it is your huge potential, but the question is till now, you don't destroy the obstacle that let it become you real power, if you can't, it will become you huge burden, as time go, the world change, robot era come, you miss the chance, at that time, the potential will become indian nightmare, accelerate the collapse of India.
China stock market is not in line with Chinese economy, like you IQ is not in line with your age, of course, this refer to Chinese standard, not Vietnamese standard, every time, reading comments, I will smile, in my real life, not meet a 30 years old man, but IQ is just 8 years old level, hehe.