Experience
Once your mind becomes more and more still, experiences will gradually and naturally develop. A mental crystal ball, bright sphere, sun or moon can become suddenly clearer and brighter. If anything arises by itself, let it be. Just observe and continue. An experience is a good sign to show that your mind is starting to be still.
What if you are imagining a crystal ball but the sun appears in your stomach? Solution: follow the nature. Observe the sun.
Never be frightened to see anything at your center. The center is an exceptional position in the body in which anything that happens will be good and pure. Some people feel that they are falling into a hole. Some see bright rings or a tunnel. Some feel that their body becomes bigger and bigger. Some don't feel as if their body still exists anymore. Some see themselves inside. All are good signs. Just keep observing the experience. Look especially at the center of the experience.
We suggest you consult a teaching monk for advice on any more advanced experiences.
