In China, six children have died and another injured after they inhaled toxic gas while playing in a deserted mining cave in the south western Yunnan Province. <br/><br/>The government chief of the Zhenxiong County Mr.Zhang Jin said the seven children, all aged around 10, ventured into the cave last evening and they were found fainted on the ground. He said three of them died on the spot and three others in the hospital. <br/><br/>The only survivor, an 11-year-old girl has come around as she did not go far into the cave before she fainted. The County Chief said the cave had been deserted for dozens of years and it is full of poisonous gas.<br/> <br/>The county government has ordered all deserted mining caves be sealed off in response to the tragedy.