religion requires us not to be greedy and make other people lose, so gambling is not allowed according to religion because it can make people greedy and greed is the root of evil
Everything can make a person greedy. Job can make a person greedy, so is job not allowed in a religion? Food can make a person glutton, so is food not allowed in a religion? Anyway I am just stating a fact that not all the religion elders interpretation are correct. It should be verified with what is written in the scripture. Besides the possibility that a religious leaders has incorrect knowledge had been proven by history. One of which is about the sun rotating around the earth which they aggressively pursue those who has different view about it.
as we all know, there are so many things China is banning to its people. not only gambling but even some normal way of life like the use of FB or twitter. so there's no surprise if they will ban gambling activities. but yes, they are just giving some of its people to gamble underground as a lot of them for sure are also gambling behind locked doors.