You cannot reliably prove the age of Liu Bao from leaf color or taste alone; the most trustworthy assessment combines packaging, production information, provenance, storage history, physical condition, sensory characteristics, and seller transparency.
Liu Bao does not automatically get better with age; instead, good storage and time can transform it into a deeper, smoother, more complex tea, but whether an older Liu Bao is actually “better” depends on the original tea, storage history, and your personal preference.
Liu Bao benefits from some environmental moisture during long-term transformation, but it does not need extremely high humidity to age properly; stable, controlled humidity is far more important than maximizing humidity.
