Disappear into thin water? A Chinese man suddenly vanished after jumping into a dam for a swim in Zhejiang Province. His friend, who dashed into the water at the same site to rescue him, also dropp...

Disappear into thin water? A Chinese man suddenly vanished after jumping into a dam for a swim in Zhejiang Province. His friend, who dashed into the water at the same site to rescue him, also dropped out of sight.