  The purpose of my talk is to explain physical backgrounds of the chiral
states, which are predicted to exist generally in the low mass regions of
hadrons, containing light quarks, and to stimulate the experimental and
phenomenological search for their candidates. The contents are organized as
follows: section 1. Present Status of Hadron Spectroscopy, section 2. Some
Basic Consideration on Quark Confinement, section 3. Essentials of Description
of Composite Hadron in U~(12)-Scheme, section 4. Revisal of Meson and Baryon
Wave Functions and Chiral States, section 5. Multi-Quark Hadrons and
Near-Threshold Resonances, section 6. Concluding Remarks
