Live Quality
Taste of the cake is in eating. Same way hollowness is experience through the process.
Process:
When you are sitting with a completely silent mouth, inactive, tongue touching the roof and silent, not quivering with thoughts, the mind watching passively, not waiting for anything in particular, feel like a hollow bamboo. Suddenly, infinite energy starts pouring within you. You are filled with the unknown, with the mysterious, with the divine. A hollow bamboo becomes a flute and the divine starts playing it. Once you are empty then there is no barrier for the divine to enter in you.