Essence is the source of life. Essence is that which has dominion over all things and manifests according to conditions in every aspects of reality.
Zen dharma transmission is achieved through the Mind Seal. Accordingly, the disciple must realize the innate Mind, and he must receive confirmation from a master.
The mind is formless. This formless mind is not empty, it can generate function. Everything in existence is all from the mind. The mind is the source of life.
The essence of Zen is to realize the source. The mind can manifest. But everyone’s mind manifests through a pattern.
If we review this Koan, Ling Tse master asks “what is the essence of Buddhism?” the main essence is mind, nothing beyond the mind.
When Ling Tse master went to visit Da Yu master, Da Yu master asks him “where are you from?” Ling Tse master says “I come from Longpor.”
Master Ling Tse before he had attained enlightenment, lived in the monastery and never asked any questions for 30 years to his enlightened master.
In Buddhism we say you have to practice and take all the burden upon yourself. Wherever your mind is, that’s where the phenomena is.
In practice we have to strengthen our ability to cultivate our own thoughts. So just like I said, if you want to solve the problems of a human being, you have to let go of habits and our karma.
If similar problems keep happening to you again and again, that means you haven’t uplifted yourself yet. Because your habits in your mind haven’t changed. That is why your life hasn’t changed.