Have you ever had a dream where a phone rang and you thought it was your cellphone ringing in your dream, but then it rang again and you suddenly realized you were in a dream and your phone was ringing in real life so you chose to wake up? It happened to me last night. Dreams can be very strange; incoherent bits of things that can amuse us or throw fear into us. That reminds us of the story of Zhuangzi who one night dreamed of being a butterfly — a happy butterfly, showing off and doing things as he pleased, unaware of being Zhuangzi. Suddenly he awoke, drowsily as Zhuangzi again. And he could not tell whether it was Zhuangzi who had dreamt the butterfly or the butterfly dreaming of Zhuangzi.