A Shanghai man who wanted to gain weight spent 10,000 yuan (US$1,500) on online health products he thought would do the job only to end up losing 6.5kg in a month. The man, surnamed Liu, has trended on mainland social media after his experience was reported by the Shanghai Morning Post. Liu, a truck driver, who is 1.78m tall and weighs 63kg, always thought he was too thin.