Preheat the oven to 110℃/230℉. Line a large baking tray with baking paper.
In a mixing bowl, put egg whites and lemon juice then start whipping. Add the sugar gradually, whip to stiff peaks. Make beautiful stiff meringue.
Add corn flour, vanilla extract and fold it gently from below to above.
Pipe the meringue onto the baking paper using a star tip. Bake it in the preheated oven at 110℃/230℉ for 60-70 min.
Make the cheese cream. Combine the cream cheese and the sugar, add whipped cream and mix it.
Make the berry sauce. Put the mixed berries in a small pan, add the sugar and cook it for about 5 minutes. Mix occasionally. Remove it from the heat and add the lemon juice. Let it cool.
Pipe the cheese cream into the meringue, arrange with fresh berries.
Serve it on a plate with the berry sauce.