There is no need to link up since it already is. The 12 zodiacs
are not zodiacs at all. It is originally and is still now a
representation of the 12 climatical changes of china. It is used in
conjunction to determine the Farmers calendar (Nong min Li), which
is backed by the emperor's seal. An inaccurate Farmers calendar can
signify the downfall of the Emperor's heavenly mandate. Basically
China follows 3 calendar systems incld the western calendar even
till today.
The 12 zodiacs (earthly branches) is used to represent not just
year, but also month, day and time. For the time aspect as said by
Yamizi, it is seperated every 2 hours or 1 Shi Chen = 2
hours.
The break season occurs when seasons change. Say the easing of
winter into spring, which occurs during the dec-jan period yearly.
This period is denoted by a period of geological adjustments
trademarked with "Hidden water arising" being the melting of snow.
The Chou (Ox) denotes this geological condition