Hong Kong Sweet Bread

Past few days had been rather lazy and ran out of idea , as to what to bake. So I went through some food blogs and came to this Hong Kong Sweet Bread. Very straight forward, and nice to eat while it's freshly baked on the same day. However, this bread can't stay soft till the next day. It becomes pretty heavy and lost the cottony texture. Think it's got to do with the cream and milk used to the dough, that gives the softness when it's freshly baked, yet won't last till the next morning. Or rather I need to polish my bread baking skill further to get the perfect result maintain.... But if you heat the bread warm in a microwave oven, you'll get the softness back again.