BrandisBaked - Thanks for the link :)
ellavanilla - The cheesecake is non-bake. So, after its set, then only can I put the meringue on top of it. After that, I have to pop it into the oven to bake it till its cooked about 10 mins. However, after a day, the meringue starts weeping :( We tried the no-bake lemon meringue cheesecake and its indeed meringue.
I will keep on searching for the answer...thanks everyone!