Children usually play a lot of games at Children's Day.这句话哪里错了

问题描述:

Children usually play a lot of games at Children's Day.这句话哪里错了

at-->on
on XXX Day在某天,固定搭配.
at XXX 在.期间
例如
on Christmas 在圣诞节那一天
at X'mas在圣诞节期间
你这个明显是“在儿童节那一天”