From 11pm on November 30 to 8am the next day, vehicles and pedestrians will be banned from Nansuzhou Road, Beijing Road E., ...

从冬奥会赛时“一墩难求”到近年新品迭出，“冰墩墩”实现了从“网红”到“长红”的持续高光。大众对“冰墩墩”的喜爱为何经久不衰？“顶流”背后有何长红密码？