Gold is the world's most valuable thing, India gold "cabbage price", why the Chinese people do not go to India to buy it?

In fact, the purity of gold here is only 18K, said here must be understood, we must know that such purity in our country is not worth money, and our country's gold purity is 24K, so that the quality of the two countries is too much difference, in addition to the purity of the problem, there is a gold refining technology here is not good, so the risk of buying gold here is still very big.