Five things we're all wondering about 1 Zimbabwean President Robert Mugabe's daughter studying in Hong Kong under an alias ... She deflected attention by posing as the girlfriend of Kim Jong-il's son 2 Hong Kong Ballet fires principal dancer ... the controversy has left a lot of people tip-toeing around their office 3 Year of the Ox begins ... foolishly, we're still writing Year of the Pig on our correspondence 4 A taller plastic wishing tree to be installed at Lam Tsuen ... it may not be real, but it looks good and nothing is in danger of falling, kind of like a trophy girlfriend 5 Herbicide feared as cause of dead vegetation near Tai Po butterfly haven ... environmentalists want more done to give distressed herbs more counselling and prevent such tragedies