A fan of Cecilia Cheung released a video clip showing the celebrity's son Lucas as well as other children being given donuts.
The kids ate the donuts immediately while eight-year-old Lucas stared at it and did not put it into his mouth.
When an adult standing beside him and asked him in why he did not consume the doughnut, he said:
"I want to bring it home for my mother."
The adult was touched by what Lucas said and we are sure Cecilia Cheung will be equally as moved.
See photos of what happened in the gallery below.