It’s one of the few books where Thay teaches on reincarnation and what happens when we die. The themes are Review for those who study and know Thay’s teachings, but also contains new language and illustrations for these core concentrations of practice. Easy and clear teaching for any student. This book covers the seven concentrations on emptiness, signlessness, aimlessness, impermanence, non-craving, letting go, and nirvana.