When Hongkonger Regina Luk Sau-ying was 65, she invited 20 friends to watch her climb into a paper coffin. “It was dark, but I realised the light was actually inside me. I felt like a fetus cradled in my mother’s womb – safe, warm and secure,” she said. “A few minutes later, the lid opened, and I saw my friends surrounding me. It felt like arriving in heaven and being greeted by angels.”