In Chinese tradition, male has to give cakes to female has part of their engagement gifts. Female in turn distribute the cakes to her friends and relatives together with an invitation card to the wedding banquet. Hence treating friends and relatives with cakes is an official announcement of a female's wedding. So if someone ask a female 'when are you treating me cakes' implies 'when are you getting married?'
Chinese Wedding Cakes
Recently I received a dozen of Chinese Wedding Cakes. Actually the product range is quite limited. Below are some of them: top to bottom:
Millenium Egg Puff
Red Puff with Egg Yoke