that is true paphioboy...
a sifu has use it for his rothchildianum and i tried for my barbatum and maudiae and it works. by covering and then exposing the plants to the sunlight, we're simulating the seasons the paphio usually bloom in their original habitat. they usually flower in hot season after monsoon/rainy season. so, by covering it, we're simulating rainy season where the sky is usually dark and there is minimal sunlight. then, when we expose it to sunlight, it simulates the hot/dry season where there are sunlight...
BTW, my maudiae has fully bloom...