zài yú
to be in
to lie in
to consist in
to depend on
to rest with
shēng mìng zài yú yùn dòng
life is motion (popular saying with many possible interpretations)
Physical effort is vital for our bodies to function (Aristotle).
Life derives from physical exercise.
yī nián zhī jì zài yú chūn
the whole year must be planned for in the spring (idiom)
early planning is the key to success
yī rì zhī jì zài yú chén
make your day's plan early in the morning (idiom)
early morning is the golden time of the day