A buffet restaurant in Guangzhou's Yuexiu District recently introduced a new type of charging standard.

The restaurant requires children who are shorter than 140 centimetres to pay according to their weight.

For example, a child who weighs 25 kilograms will be asked to pay 25 yuan (US$3.125) while one who weighs 26 kilograms pay 26 yuan (US$3.25).