What is Ch’an (禪, also known as Zen in English)?

To make it easy, can try to understand the meaning behind that Chinese character
單 Single, so what does “Single” means in life?
衣 Cloth, so what does “Cloth” means in the learning of Chan?

The learning of Chan (Zen) goes beyond reading books, articles, listening to speeches from different Guru, it is about how well can you manage the learning about yourself and being yourself. Most importantly, how to live.